Radiation Safety Information Computational Center
Oak Ridge National Laboratory
Post Office Box 2008
Oak Ridge, Tennessee 37831-6362
Managed by
Lockheed Martin Energy Research Corp.
for the U.S. Department of Energy
under contract DE-AC05-96OR22464

Phone No. 423-574-6176
FAX 423-574-6182

Internet: PDC@ORNL.GOV
WWW: http://www-rsicc.ornl.gov/rsic.html

No. 410 February 1999
Whatever the expense of improving education, it is an investment in the future we must make. Excellence costs. But in the long run mediocrity costs much more.--Glenn T. Seaborg

Glenn Seaborg, Nobel Chemist, Dies February 26, 1999

The scientific community, nay the world, is the poorer for the loss of Glenn T. Seaborg. His was a life of service to science, to education, and to his country. His contributions are well-documented and a simple list of honors bestowed would fill pages far in excess of what is allowed in this newsletter. His career spanned six decades and was productive from the beginning. Seaborg pursued his degree in the University of California system. After earning a Ph.D., Seaborg began his research career on the Berkeley campus. In the course of a five-year association, Jack Livingood and Seaborg discovered several isotopes. Medicine must thank them for iodine-131, iron-59, and cobalt-60, still used for diagnostic imaging and radiation therapy. Seaborg and Emilio Segrè discovered technetium-99m in 1938. It is a widely used isotope in diagnostic imaging. He shared with Edwin M. McMillan the 1951 Nobel Prize in chemistry for work on transuranium elements. Seaborg was honored by the codiscoverers of Element 106 who recommended that it be named "seaborgium," with the symbol Sg.

He was a member of the Manhattan Project, Chancellor of the University of California at Berkeley, and Chairman of the Atomic Energy Commission (the predecessor of today's U.S. Department of Energy) under Presidents Kennedy, Johnson, and Nixon (1961-1971). Seaborg also served as president for both the American Association for the Advancement of Science and the American Chemical Society. As an advocate for science education, he established the Lawrence Hall of Science, and was a member of President Reagan's National Commission on Excellence in Education, which produced the landmark 1983 report, "A Nation at Risk: The Imperative for Educational Reform." He was also a primary mover behind "Great Explorations in Math and Science," a leading Internet resource for science teachers. As late as January 1998, Seaborg was asked to chair the Science Committee of the California Commission for the Establishment of Academic Content and Performance Standards.

Seaborg was also a major advocate for nuclear arms control, international cooperation in science, and conservation of natural resources. He wrote more than 500 scientific articles and numerous books including an autobiography soon to be published entitled, A Chemist in the White House: From the Manhattan Project to the End of the Cold War. He held more than 40 patents, including the only ones for chemical elements (americium and curium), and had been awarded more than 50 honorary doctoral degrees.

Other on-line resources include http://seaborg.nmu.edu/ and http://nosferatu.cas.usf.edu/chemistry/ classes/chm4070/jack/coamain.html.

Year 2000

Feedback from developers and users on issues related to Y2000 compatibility on RSICC-distributed codes is welcome and needed! Please contact RSICC via email or post related information on our electronic notebook. Updated information about Y2K issues in RSICC packages may be found at http://www-rsicc.ornl.gov/year2000.html. The following disclaimer applies to all RSICC-distributed codes/data libraries.

This material was prepared as an account of Government sponsored work and describes a code system or data library which is one of a series collected by the Radiation Safety Information Computational Center (RSICC). These codes/data were developed by various Government and private organizations who contributed them to RSICC for distribution; they did not normally originate at RSICC. RSICC is informed that each code system has been tested by the contributor, and, if practical, sample problems have been run by RSICC. Neither the United States Government, nor the Department of Energy, nor Lockheed Martin Energy Research Corporation, nor any person acting on behalf of the Department of Energy or Lockheed Martin Energy Research Corporation, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, usefulness or functioning of any information code/data and related material, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government, the Department of Energy, Energy Systems, nor any person acting on behalf of the Department of Energy or Lockheed Martin Energy Research Corporation.


Two changes or additions were made to the computer code collection during the month. One new code system was packaged and added to the collection, and one code system was replaced with a newly frozen version.

Oak Ridge National Laboratory contributed a newly frozen version of the SAMMY code system for calculating multilevel R-matrix fits to neutron data using Bayes' equations. Modifications and new features of the resonance analysis code SAMMY-M2 are documented in Revision 4 of the SAMMY Users' Guide. Several features are designed specifically for use with data taken at the Renssaeler Polytechnic Institute linac. Additional options include the treatment of backgrounds, a new resolution function, the ability to analyze self-indication experiments, a better multiple-scattering correction, and an option to include paramagnetic cross sections. Other features were designed to facilitate interaction between differential and integral data analysis: an option to calculate average cross sections with no corrections on the theoretical values, the ability to fit directly to some types of integral data, an option to introduce systematic data errors (and hence covariances) without having to explicitly generate the entire data covariance matrix, and output of the resonance parameter covariance matrix in a format that should be efficient for transmittal to other computer codes.

SAMMY-M2 runs on the IBM RS/6000 and has been ported to DEC Alpha computers under both Open/VMS and OSF1 operating systems. It also runs on personal computers under the RedHat Linux operating system. SAMMY-M2 is transmitted in tar format on either a CD-ROM or cartridge tape. References: ORNL/TM-9179 Rev. 4 (1999). Fortran; IBM RS/6000, DEC, Linux PC (P00158/IRISC/04).

Oak Ridge National Laboratory contributed this code system which provides a calendar-based scheduler for conference rooms through the World Wide Web. The Conference Room Reservation System (CRRS) software allows employees to schedule conference rooms at ORNL without calling the person who keeps a paper log. A top level HTML page is the access to the system. Then a series of perl scripts allow the user to reserve a conference room, browse the list of room reservations, or cancel a reservation. Tools are also provided to add conference rooms to the system and to control email notices. Customized versions have been constructed to reserve government vehicles and laboratory instruments. CRRS must be installed on a www server. At ORNL it runs on a DEC Alpha under Digital Unix 4.0 and requires Version 5 of Perl. It is transmitted in a Unix tar file on one 3.5-in. (1.44 MB) DOS formatted diskette. References: Informal notes (Feb. 1999). DEC Alpha; Perl (P00376/DALPU/00).


RSICC attempts to keep its users/contributors advised of conferences, courses, and symposia in the field of radiation protection, transport, and shielding through this section of the newsletter. Should you be involved in the planning/organization of such events, feel free to send your announcements and calls for papers via email to raf@ornl.gov with "conferences" in the subject line. Please include the announcement in its native format as an attachment to the message. If the meeting is on a website, please include the url.

MCNP Courses

The MCNP code developers will present one advanced class and one introductory class at Los Alamos National Laboratory in 1999. There will also be two classes taught in Europe. The dates for these classes are

The introductory class is for people who have little or no experience with MCNP. The intermediate to advanced class will be held for people who have used MCNP and want to extend their knowledge and gain depth of understanding. We plan to showcase the preliminary 4C version of MCNP that will be in a pre-release status. The new features that will be discussed include:

Other capabilities of MCNP to be covered are:

All classes provide interactive computer learning, with time available to discuss individual questions and problems with MCNP experts or to pursue in more detail topics mentioned in the talks. Please note that other classes are offered based on MCNP. For more information and to register for the LANL classes, contact Judi Briesmeister, jfb@lanl.gov. For information on the European classes, contact Enrico Sartori, OECD/NEA, sartori@nea.fr.

Judi Briesmeister
Code Integration Group (X-CI), Los Alamos National Laboratory

6th International Training Course/Workshop on
Methodologies for Particle Transport Simulation of Nuclear Systems

The 6th Intl. Workshop will be held May 17-21, 1999, at the Pennsylvania State University. The workshop is cosponsored by the Penn State Transport Theory Group, OECD/NEA Data Bank, and RSICC with cooperation from the IAEA. The course will combine lectures on transport theory methods with hands-on practice in using standard computer codes (Discrete Ordinates code DORT/TORT, Monte Carlo code MCNP) available through RSICC, as well as the A3MCNP (Automated Adjoint-Accelerated MCNP) and PENTRAN (3-D parallel Sn) code systems developed at Penn State. To be included on the mailing list and receive additional information, please send an email message to haghigha@gracie.psu.edu or petrovic@gracie.psu.edu with your name, title/position, company, address, phone/fax/email, or contact Prof. Haghighat or Dr. Petrovic at the following address.

Penn State University
Nuclear Engineering Department
231 Sackett Building
University Park, PA 16802
(Prof. Haghighat's phone, 814-865-0039; fax, 814-865-8499: Dr. Petrovic's numbers 814-865-0045; fax, 814-865-8499).

European participants may contact:

Enrico Sartori
OECD/NEA Data Bank
12 Bd des Iles
92130 Issy-les-Moulineaux

Tel.+33 1 45 24 10 72; Fax +33 1 45 24 11 10; www http://www.nea.fr; e-mail sartori@nea.fr. Detailed information is available at the following url: http://gracie.nuce.psu.edu/wshop99/sch99c.html.

Third International Conference on Isotopes

The Third International Conference on Isotopes (3ICI) will be held in the Renaissance Hotel in Vancouver, Canada, September 6-10, 1999. The conference will be hosted by TRIUMF, Canada's national accelerator facility and a major center for isotope production and applications in research and medicine, in conjunction with the Canadian Chapter meeting of the International Isotope Society.

The scientific program will consist of plenary and parallel oral sessions and poster presentations. Topics will include the following:

Persons interested in presenting an oral or poster paper should prepare a one page abstract in accord with the instructions on the web page: http://www.triumf.ca/3ici/. Further information is available from Ms. Elly M. Driessen, TRIUMF, 4004 Wesbrook Mall, Vancouver, B.C., Canada V6T 2A3 (phone 604-222-7352, fax 604-222-1074, email ici@triumf.ca).

SCALE Criticality Safety Training Course--Europe

We have received several requests from SCALE users for organising the next SCALE training course in Europe. As you may know already, from 20-24 September 1999 the "International Conference on Nuclear Criticality Safety (ICNC'99)" will take place in Versailles, France; http://www.ipsn.fr/icnc99/. We have found it therefore convenient to organise this training course the week before that conference. This will facilitate both attendance in the criticality safety training course and be part of the last major event in criticality safety of this decade (sorry but I shall not use the term millennium).

We plan to hold this training course in the premises of the French National Institute for Nuclear Science and Techniques (INSTN) located about 6 miles from Versailles. The course will be given by the authors and code managers from the ORNL (http://www.cad.ornl.gov/scale).

The technical programme of the workshop has been designed by Steve Bowman, SCALE Project Leader, Computational Physics & Engineering Division, Oak Ridge National Laboratory (phone +1 423-574-5263, fax+1 423-576-3513, email st5@ornl.gov). An attendance certificate will be delivered at the end of the course. This course is organised in co-operation with the Radiation Safety Information Computational Center (RSICC). Should you be interested in participating, please return the form by 31 December 1998. More precise information, including the exact participation fee, location, transportation and accommodation possibilities will be provided later.

Best regards,
Enrico Sartori
OECD/NEA Data Bank
12 Bd des Iles
92130 Issy-les-Moulineaux
Tel.+33 1 45 24 10 72; Fax +33 1 45 24 11 10; www http://www.nea.fr; e-mail sartori@nea.fr

The SCALE KENO VI Criticality Course focuses on KENO VI and the associated criticality analysis sequences in CSAS. This version of KENO can handle triangular pitch fuel such as that required for VVER lattices. The number of registrants for each course is limited. Registrations will be accepted on a first-come basis.

Tenth International Symposium on Reactor Dosimetry

The Tenth International Symposium on Reactor Dosimetry will be held September 12-17, 1999, in Osaka, Japan. About every three years this symposium provides a forum for the interchange of state-of-the-art techniques, databases and standardization of radiation metrology. The Symposium will be of value to those involved in reactor dosimetry, including researchers, manufacturers and representatives from industry, utilities and regulatory agencies. The Symposium is jointly sponsored by the Atomic Energy Society of Japan (AESJ), the American Society for Testing and Materials (ASTM) and the European Working Group on Reactor Dosimetry (EWGRD). It is organized by ASTM Committee E10 on Nuclear Technology and Applications and EWGRD.

The Symposium theme is dosimetry for the assessment of irradiated reactor materials and reactor experiments, featuring radiation metrology techniques, databases and standardization. Inquiries and requests to be added to the mailing list should be sent to one of the following: North & South America, East & Southeast Asia:

Dr. David W. Vehar
ASTM Program Secretary
Sandia National Laboratories, MS-1136
P.O. Box 5800, Albuquerque, NM 87185-1136, USA

Phone: 505-845-3414, fax: 505-844-0798
email: dwvehar@sandia.gov

Europe, Africa, Asia (other), and Australia:

Dr. Hamid Ait Abderrahim
EWGRD Programme Secretary
Boeretang 200, B-2400 Mol, BELGIUM

Phone: 32-14-332277, fax: 32-14-321529
email: haitabde@sckcen.be

Introduction to MCNP Short Course

Personnel from the X Division of Los Alamos National Lab have agreed to teach a four-day short course on MCNP September 29-October 2, 1999, at North Carolina State University, Raleigh, NC. The first 20 paid applicants will be accepted and the cost ($1800) will be reduced if payment is received by August 1, 1999. Registration will close on September 1, 1999. This introductory class is for people who have never used MCNP or have very limited experience with the code and will include interactive computer sessions. Topics to be covered include basic geometry and advanced geometry, source definitions, tallies, data, variance reduction, statistical analysis, plotting (geometry, tallies, and particle tracks) and neutron/photon/electron physics. Time will be available to discuss individual questions and problems with MCNP experts or to pursue topics mentioned in the talks. The class will use the pre-release version 4C of MCNP. New features that will be briefly discussed include macrobodies, unresolved resonance treatment, perturbation enhancement, alpha eigenvalues, and cumulative tallies. A manual will be provided for use in the classroom. As co-sponsor of the workshop, RSICC will provide a CD with the code package and the data after the class is over for a nominal cost of $300 payable to RSICC. Apply by e-mail to Dr. T. S. Elleman, e-mail elleman@ncsu.edu (please copy to Dr. R. P. Gardner; e-mail gardner@ncsu.edu). Make checks or money orders payable to MCNP/IRRMA and mail to:

Dr. T. S. Elleman
Nuclear Engineering Department, Box 7909
North Carolina State University
Raleigh, NC 27695-7909 USA
phone 919-515-3620
fax 919-515-5115
It is possible to register on-line at www.quantumres.com.

The workshop will be followed by the Industrial Radiation and Radioisotope Measurement Applications (IRRMA-IV) topical meeting in Raleigh, NC. Those attending the IRRMA topical will be able to attend the MCNP short course and stay for the IRRMA-IV topical which will have two or three sessions on the application of Monte Carlo simulation on topics of interest to IRRMA. It is suggested that attendees of the MCNP short course also use the Velvet Cloak Inn (Phone numbers 800-223-0888 or 800-334-4372).


A call for papers has been issued for the 4th Topical Meeting on Industrial Radiation and Radioisotope Measurement Applications IRRMA '99. The meeting will be held October 3-7, 1999, in Raleigh, North Carolina. It will bring together scientists and engineers from around the world with an interest in the use of nuclear radiation and radioisotopes for industrial measurement applications. IRRMA '99 is sponsored by the Isotopes and Radiation Division of the American Nuclear Society (ANS), the Eastern Carolinas Section of ANS, the Center for Engineering Applications of Radioisotopes at North Carolina State University, and Quantum Research Services, Inc. Presentation summaries will be published by ANS and will be available at the meeting. Selected papers will be published in full in the journal Applied Radiation and Isotopes, published by Elsevier Science.

Both oral and poster presentations are solicited in the areas listed below. One-page abstracts are due by April 1, 1999. Author instructions will be sent to those indicating an interest in making an oral or poster presentation. Sessions are planned in the following categories:

Additional information may be found at http://www.quantumres.com./irrma.html or contact
Dr. Thomas S. Elleman
Department of Nuclear Engineering
North Carolina State University, Box 7909
Raleigh, NC 27695-7909 U.S.A.
Telephone 919-515-2302
Fax 919-515-5115
E-mail elleman@eos.ncsu.edu

"Half a Century of Radiation Shielding Research and Its Evolution into the Next Era" is the theme for the 9th International Conference on Radiation Shielding to be held October 17-22, 1999, in Tsukuba, Japan. It is sponsored and organized by the Japan Atomic Energy Research Institute and co-sponsored by the OECD-Nuclear Energy Agency-Nuclear Science Committee (NEA-NSC), Atomic Energy Society of Japan (AESJ), and the Radiation Safety Information Computational Center (RSICC). Participants in the conference explore the scientific, technological and engineering issues associated with radiation shielding in broad nuclear energy systems, accelerator facilities, space and general environments. Detailed information about the conference may be obtained from Yujiro Ikeda, Japan Atomic Energy Research Institute, Tokai Research Establishment, Neutron Science Research Center, Spallation Neutronics Laboratory, Tokai-mura, Naka-gun, Ibaraki-ken 319-11 Japan (phone 81-29-282-6074, fax 81-29-282-5709, email ikeda@fnshp.tokai. jaeri.go.jp) or from the web page at http://icrs9.tokai.jaeri.go.jp.


Your attention is directed to the following events of interest.

April 1999

First Latin American Symposium on Nuclear Tracks and Radiation, April 5-9, 1999, Caraças, Venezuela, Institute for Advanced Studies, Convention Centre. Contact: Professor Laszlo Sajo, Universidad Simon Bolivar, FE-1, Apdo 89000, Caracas, Venezuela, (phone 58-2-906- 3590, fax 58-2-906-3712, email lsajo@fis.usb.ve).

35th Annual Meeting of the National Council on Radiation Protection and Measurements, Apr. 7-8, 1999, Arlington, Virginia. Contact: NCRP, Suite 800, 7910 Woodmont Ave., Bethesda, MD 20814-3095 (phone 301-657-2652, fax 301-907-8768, email ncrp@ncrp.com).

May 1999

SARPA-SAAPMB 1999 Joint Autumn School and Congress, May 11-14, 1999, Hartbeespoort, South Africa, sponsored by the AEC of SA Ltd. Contact: Suzi Van Eck, Conference Secretary, AEC - Building 2100B, P.O. Box 582 Pretoria 0001, South Africa (phone 27 (0)12 316.6034/5888, fax + 27 (0)12 316.6207, email suzi@aec.co.za, url http://www.nml.csir.co.za/sarpa/conferen.htm).

Methodologies for Particle Transport Simulation of Nuclear Systems, 6th Internatl. Workshop, May 17-21, 1999, Penn State University. Contact: Prof. Haghighat or Dr. Petrovic at Penn State University, Nuclear Engineering Department, 231 Sackett Building, University Park, PA 16802 (814-865-0039 or 814-865-0045; fax, 814-865-8499 or 814-865-8499). European participants may contact: Enrico Sartori, OECD/NEA Data Bank, 12 Bd des Iles, 92130 Issy-les-Moulineaux, France.

Annual Meeting on Nuclear Technology '99, May 18-21, 1999, Karlsruhe, Germany, sponsored by the German Nuclear Society and the Germany Nuclear Forum. Contact: INFORUM GmbH, Congress Office, Heussallee 10, D 53113 Bonn, Germany (phone 49-0-228-507-223, fax 49-0-228-507-262, email inforum_gmbh@compuserve.com).

Communicating the Nuclear Advantage, May 30-June 2, 1999, Montreal, Quebec. Contact: Canadian Nuclear Assoc., Suite 475, 144 Front St., Toronto, Ontario Canada M5J 2L7 (phone 416-977-6152 ext. 18; fax 416-979-8356, email carons@cna.ca, url www.cna.ca.

June 1999

ICNRP '99, Second International Conference Nuclear and Radiation Physics, June 7-10, 1999, Almaty, Kazakhstan. Contact: Kislitsin Sergey, Institute of Nuclear Physics NNC RK, Ibragimov Street,1, Almaty 480082 Kazakhstan (phone 7-3272-545143; 7-3272) 546467: fax: (7) 3272546517: email: ksb@satsun.sci.kz).

Conference on Radionuclide Metrology and its Application, June 7-11, 1999, Prague. Contact: Pavel Dryák, Czech Metrological Institute, Radiova 1, CZ 102 00 Prague, Czech Republic (phone 420-2-67008244, fax 420-2-67008466, email pdryak@cmi.cz).

Executive Conference on Nuclear Power Plant Decommissioning and Spent Fuel Management, June 27-30, 1999, Traverse City, Michigan, sponsored by the ANS. Contact: Ken Powers, Big Rock Point Restoration Project, 10269 U.S. 31 N., Charelvoix, MI 49720 (phone 616-547-8388, fax 616-547-8187).

August 1999

Computational Methods in Reactor Analysis and Shielding, Aug. 16-20, 1999, Knoxville, Tennessee, a short course offered by the University of Tennessee-Knoxville. Contact: T. W. Kerlin, Dept. of Nuclear Engineering, University of Tennessee, Knoxville, TN 37996-2300 (phone 423-974-2525, fax 423-974-0668).

Nuclear Criticality Safety, Aug. 16-20, 1999, Knoxville, Tennessee, a short course offered by the University of Tennessee-Knoxville. Contact: T. W. Kerlin, Dept. of Nuclear Engineering, University of Tennessee, Knoxville, TN 37996-2300 (phone 423-974-2525, fax 423-974-0668).

Monte Carlo Analysis, Aug. 16-20, 1999, Knoxville, Tennessee, a short course offered by the University of Tennessee-Knoxville. Contact: T. W. Kerlin, Dept. of Nuclear Engineering, University of Tennessee, Knoxville, TN 37996-2300 (phone 423-974-2525, fax 423-974-0668).

September 1999

3rd International Conference on Isotopes, September 6-10, 1999, Vancouver, Canada. Contact http://www.triumf.ca/3ici/.

Tenth International Symposium on Reactor Dosimetry, Sept. 12-17, 1999, in Osaka, Japan. Contact: Dr. David W. Vehar (505-845-3414, fax 505-844-0798, email: dwvehar@sandia.gov) or Dr. Hamid Ait Abderrahim (32-14-332277, fax 32- 14-321529, email haitabde@sckcen.be).

SCALE Criticality Course (KENO V.a), Sept. 13-17, 1999, INSTN, Saclay, France. Contact: Enrico Sartori, OECD/NEA Data Bank, Le Seine-Saint Germain, 12 boulevard des Iles, F- 92130 Issy-les-Moulineaux, France (Tel+33 (0)1 45 24 10 72; Fax+33 (0)1 45 24 11 10; E-mail sartori@nea.fr).

6th International Conference on Nuclear Criticality Safety, September 20-24, 1999, Versailles, France. Contact: http://www.ipsn.fr/icnc99/.

October 1999

Half a Century of Radiation Shielding Research and Its Evolution into the Next Era (ICRS-9), Oct. 17-22, 1999, Tsukuba, Japan, sponsored and organized by the Japan Atomic Energy Research Institute. Contact: Yujiro Ikeda, Japan Atomic Energy Research Institute, Tokai Research Establishment, Neutron Science Research Center, Spallation Neutronics Laboratory, Tokai-mura, Naka-gun, Ibaraki-ken 319-11 Japan (phone 81-29-282-6074, fax 81-29-282-5709, email ikeda@fnshp.tokai.jaeri.go.jp, url http://icrs9.tokai.jaeri.go.jp).


The following literature cited has been reviewed and placed in the RSICC Information Storage and Retrieval Information System (SARIS), now searchable on the RSICC web server (http://www-rsicc.ornl.gov/SARIS.html). This early announcement is made as a service to the shielding community. Copies of the literature are not distributed by RSICC. They may generally be obtained from the author or from a documentation center such as the National Technical Information Service (NTIS), Department of Commerce, Springfield, Virginia 22161. For literature listed as available from INIS contact INIS Clearinghouse, International Atomic Energy Agency, P.O. Box 100, A-1400 Vienna.

Radiation Shielding Literature

Health Phys., 76, 17-26 . . . A Generic Mixing System for Achieving Conditions Suitable for Single Point Representative Effluent Air Sampling. . . . ; McFarland, A.R.; Anand, N.K.; Ortiz, C.A.; Gupta, R.; Chandra, S.; McManigle, A.P. . . . January 1999 . . . Texas A&M University, College Station, TX; Radian International, Golden, CO.

Health Phys., 76, 27-35 . . . Scattered Fractions of Dose from 6, 10, 18, and 25 MV Linear Accelerator X Rays in Radiotherapy Facilities. . . . Shobe, J.; Rodgers, J.E.; Taylor, P.L. . . . January 1999 . . . National Institute of Standards and Technology, Gaithersburg, MD; Georgetown University, Washington, DC.

Health Phys., 76, 36-43 . . . Contribution of 137Cs to the Total Absorbed Gamma Dose Rate in Air in a Greek Forest Ecosystem: Measurements and Monte Carlo Computations. . . . Clouvas, A.; Xanthos, S.; Antonopoulos-Domis, M.; Alifragis, D.A. . . . January 1999 . . . Aristotle University of Thessaloniki, Thessaloniki, Greece.

Health Phys., 76, 57-61 . . . Evaluation and Calculation of Nuclear Data for Deuteron-Induced Reactions on 51V, 52Cr, 56Fe, and 57Fe. . . . Xu Xiaoping; Han Yinlu; Zhuang Youxiang . . . January 1999 . . . China Institute of Atomic Energy, Beijing, P.R. China.

Health Phys., 76, 105-119 . . . Chernobyl Accident: Reconstruction of Thyroid Dose for Inhabitants of the Republic of Belarus. . . .Gavrilin, Y.I.; Khrouch, V.T.; Shinkarev, S.M.; Krysenko, N.A.; Skryabin, A.M.; Bouville, A.; Anspaugh, L.R. . . . February 1999 . . . Ministry of Public Health, Moscow, Russia; Ministry of Public Health, Gomel, Belarus; Gomel Branch of the Scientific Research Institute of Radiation Medicine, Gomel, Belarus; National Cancer Institute, Bethesda, MD; Lawrence Livermore National Laboratory, Livermore, CA.

Health Phys., 76, 120-128 . . . Biokinetics and Dosimetry of Titanium Tritide Particles in the Lung. . . . Cheng, Y-S.; Snipes, M.B.; Wang, Y.; Jow, H-N. . . . February 1999 . . . Lovelace Respiratory Research Institute, Albuquerque, NM; Sandia National Laboratories, Albuquerque, NM.

Health Phys., 76, 129-136 . . . Recommended Restrictions After 131I Therapy: Measured Doses in Family Members. . . . Mathieu, I.; Caussin, J.; Smeesters, P.; Wambersie, A.; Beckers, C. . . . February 1999 . . . University of Louvain Medical School, Brussels, Belgium; Public Health and Environment, Brussels, Belgium.

Health Phys., 76, 137-144 . . . An EPR Dosimetry Method for Rapid Scanning of Children Following A Radiation Accident Using Deciduous Teeth. . . . Haskell, E.H.; Hayes, R.B.; Kenner, G.H. . . . February 1999 . . . University of Utah, Salt Lake City, UT.

Health Phys., 76, 156-161 . . . Calculation of Effective Doses for Broad Parallel Photon Beams. . . . Kim, C.H.; Reece, W.D.; Poston, J. W., Sr. . . . February 1999 . . . Texas A&M University, College Station, TX.

Health Phys., 76, 162-170 . . . Personal Dose Equivalent for Photons and Its Variation With Dosimeter Position. . . . Zankl, M. . . . February 1999 . . . Institute of Radiation Protection, Neuherberg, Germany.

Nucl. Technol., 124, 201-214 . . . Criticality Studies on Molten Lead Energy Amplifiers. . . . Oda, A.; Martinez-Val, J.M.; Perlado, J.M. . . . December 1998 . . . Madrid Polytechnic University, Madrid, Spain.

Nucl. Technol., 124, 215-222 . . . The Nonproliferative Light Water Thorium Reactor: A New Approach To Light Water Reactor Core Technology. . . . Radkowsky, A.; Galperin, A. . . . December 1998 . . . Tel Aviv University, Tel Aviv, Israel; Ben-Gurion University of the Negev, Beer-Sheva, Israel.

Nucl. Technol., 125, 1-12 . . . Monte Carlo Simulation of the Leu-Fueled Slowpoke-2 Nuclear Reactor Using MCNP4A. . . . Pierre, M.J.R.; Bonin, H.W. . . . January 1999 . . . Royal Military College of Canada, Kingston, Ontario, Canada.

Nucl. Technol., 125, 104-115 . . . Target and Filter Concepts for Accelerator-Driven Boron Neutron Capture Therapy Applications. . . . Powell, J.R.; Ludewig, H.; Todosow, M.; Reich, M. . . . January 1999 . . . Brookhaven National Laboratory, Upton, NY.

Nucl. Sci. Eng., 130, 269-291 . . . A Kinetic Theory for Nonanalog Monte Carlo Algorithms: Exponential Transform with Angular Biasing. . . . Ueki, T.; Larsen, E.W. . . . November 1998 . . . University of Michigan, Ann Arbor, MI.

Nucl. Sci. Eng., 130, 309-319 . . . The Transmutation of Long-Lived Fission Products by Neutron Irradiation. . . . Salvatores, M.; Slessarev, I.; Tchistiakov, A. . . . November 1998 . . . Commissariat a l'Energie Atomique, Cadarache, France.

Nucl. Sci. Eng., 130, 320-339 . . . Activation by Protons in Range-Thick Lead and Tungsten Spallation Targets. . . . Laird, C.E.; Mullins, D.H.; McGibney, D.B.; Swartz, J.; Kamau, R.W. . . . November 1998 . . . Eastern Kentucky University, Richmond, KY; Brookhaven National Laboratory, Upton, NY.

Nucl. Sci. Eng., 130, 340-347 . . . Justification of a Simple Ramsauer Model for Neutron Total Cross Sections. . . . Grimes, S.M.; Anderson, J.D.; Bauer, R.W.; Madsen, V.A. . . . November 1999 . . . Lawrence Livermore National Laboratory, Livermore, CA.

Nucl. Sci. Eng., 130, 348-360 . . . Application of a Simple Ramsauer Model for Neutron Total Cross Sections. . . . Bauer, R.W.; Anderson, J.D.; Grimes, S.M.; Knapp, D.A.; Madsen, V.A. . . . November 1998 . . . Lawrence Livermore National Laboratory, Livermore, CA.

Nucl. Sci. Eng., 130, 374-385 . . . Monte Carlo Estimates of Transport Solutions to the Isotropic Slab Problem. . . . Booth, T.E. . . . November 1998 . . . Los Alamos National Laboratory, Los Alamos, NM.

Nucl. Sci. Eng., 130, 386-390 . . . Effect of Low-Energy Resonance Absorber on Positive Neutron Temperature Coefficient of Dilute Plutonium-Water Solution. . . . Obara, T.; Sekimoto, H. . . . November 1998 . . . Tokyo Institute of Technology, Tokyo, Japan.

Nucl. Sci. Eng., 131, 1-22 . . . Neutronic Design of a Fission Converter-Based Epithermal Neutron Beam for Neutron Capture Therapy. . . . Kiger, W.S., III; Sakamoto, S.; Harling, O.K. . . . January 1999 . . . Massachusetts Institute of Technology, Cambridge, MA.

Nucl. Sci. Eng., 131, 78-95 . . . Cascade-Exciton Model Analysis of Nucleon-Induced Fission Cross Sections of Lead and Bismuth at 45- to 500-MeV Energies. . . . Prokofiev, A.V.; Mashnik, S.G.; Sierk, A.J. . . . January 1999 . . . V. G. Khlopin Radium Institute, St. Petersburg, Russia; Los Alamos National Laboratory, Los Alamos, NM.

Nucl. Sci. Eng., 131, 96-106 . . . Experimental Determination of the Resonance Integral for 237Np in a Heavy Water Solution. . . . Titarenko, Y.E.; Shvedov, O.V.; Igumnov, M.M.; Karpikhin, E.I.; Batyaev, V.F.; Volk, V.I.; V . . . January 1999 . . . State Scientific Center of Russian Federation, Moscow, Russia; Research and Development Institute of Power Engineering, Moscow, Russia; Los Alamos National Laboratory, Los Alamos, NM; Oak Ridge National Laboratory, Oak Ridge, TN.

Nucl. Sci. Eng., 131, 107-115 . . . Estimation of Energy Dependence of the Optical Potential Parameters for 209Bi. . . . Kawano, T. . . . January 1999 . . . Kyushu University, Kasuga, Japan.

Nucl. Sci. Eng., 131, 123-131 . . . In-Rod Effective Cross Sections of Resonance Absorbers Evaluated with Routine Cell Codes. . . . Segev, M.; Raitses, G.; Paratte, J.M. . . . January 1999 . . . Ben-Gurion University, Beer-Sheva, Israel; Paul Scherrer Institute, Switzerland.

Nucl. Sci. Eng., 131, 132-136 . . . Direction Cosines and Polarization Vectors for Monte Carlo Photon Scattering. . . . Peplow, D.E. . . . January 1999 . . . North Carolina State University, Raleigh, NC.

Med. Phys., 26, 87-96 . . . Clinical Brachytherapy with Neutron Emitting 252Cf Sources and Adherence to AAPM TG-43 Dosimetry Protocol. . . . Rivard, M.J.; Wierzbicki, J.G.; Van den Heuvel, F.; Martin, R.C.; McMahon, R.R. . . . January 1999 . . . Wayne State University, Detroit, MI; Oak Ridge National Laboratory, Oak Ridge, TN.

ICRU Report 59 . . . Clinical Proton Dosimetry Part I: Beam Production, Beam Delivery and Measurement of Absorbed Dose. . . . December 1998 . . . International Commission On Radiation Units and Measurements, Bethesda, MD.

Nucl. Sci. Technol., 35, 816-829 . . . Application of the EGS4 Monte Carlo Code to a Study of Multilayer Gamma-Ray Exposure Buildup Factors of Up to 40 mfp. . . . Hirayama, H.; Shin, K. . . . November 1998 . . . High Energy Accelerator Research Organization, Oho, Tsukuba-shi, Japan; Kyoto University, Kyoto, Japan.

KEK Proceedings 98-7 . . . Proceedings of the Seventh EGS4 Users' Meeting in Japan. . . . Hirayama, H.; Namito, Y.; Ban, S. eds. . . . 1998 . . . High Energy Accelerator Research Organization, Oho, Japan.

KEK Preprint 98-170 . . . Description of Multilayered Gamma-Ray Exposure Buildup Factors up to 40 mfp by the Approximating Model. . . . ; Shin, K. ;Hirayama, H. . . . October 1998 . . . Kyoto University, Kyoto, Japan; High Energy Accelerator Research Organization, Ibaraki, Japan.

KEK Preprint 98-177 . . . Generation of Positrons Via Pair-Creation of Compton Scattered Gamma-Rays. . . . Dobashi, K.; Hirose, T.; Kumita, T.; Kurihara, Y.; Muto, T.; Omori, T.; Okugi, T.; Sugiyama, . . . October 1998 . . . Tokyo Metropolitan University, Tokyo, Japan; KEK, Ibaraki, Japan.

KEK Preprint 98-178 . . . Geant4 - Worldwide Software Collaboration. . . . Amako, K. . . . October 1998 . . . High Energy Accelerator Research Organization, Ibaraki-ken, Japan.

KEK Preprint 98-179 . . . Implementation of Electron-Impact Ionization into the EGS4 Code. . . . Namito, Y.; Hirayama, H. . . . November 1998 . . . High Energy Accelerator Research Organization, Ibaraki-ken, Japan.

INDC(SUD)-003 . . . On the Systematics of the (n,a) Reaction Cross-Sections at 14.5 MeV Neutrons. . . . Osman, K.T.; Habbani, F.I. . . . December 1998 . . . University of Khartoum, Khartoum, Sudan.