RSICC DATA PACKAGE DLC-244

1.         NAME AND TITLE OF DATA LIBRARY

FSXJ32:            A Continuous Energy Cross Section MCNP Nuclear Data Library Based on JENDL-3.2.

2.         NAME AND TITLE OF DATA RETRIEVAL PROGRAMS

The nuclear data processing system NJOY-97 was used. Reliability was confirmed by solving several benchmark problems.

3.         CONTRIBUTOR

Nuclear Data Center Japan Atomic Energy Research Institute Tokai-mura, Ibaraki-ken 319-1195, Japan, through the OECD Nuclear Energy Agency Data Bank, Issy‑les‑Moulineaux, France.

4.         HISTORICAL BACKGROUND AND INFORMATION

The general purpose Japanese Evaluated Nuclear Data Library Version 3 Revision 1 (JENDL-3.1) was released in 1990. Many cross section libraries for various transport calculation codes derived from JENDL-3.1, including FSXLIB-3, were prepared and used for various applications. After releasing JENDL-3.1, some problems were pointed out, such as data inconsistency and insufficient data accuracy. Thus, re-evaluation of JENDL-3 was carried out in order to solve the above problems by adding new evaluations and improving data accuracy. At the end of June 1994, JENDL-3.2 (JENDL-3 Revision 2) was released for public use. In JENDL-3.2, the cross section data of 340 nuclides are stored and the associated gamma-ray data are given for 66 nuclides. In addition to the re-evaluation work of JENDL-3.2, the continuous energy cross section library for MCNP based on JENDL-3.2, FSXLIB-J3R2, was produced. Preliminary tests of JENDL-3.2 benchmark data performed using MCNP and FSXLIB-J3R2 revealed several problems. The problems were subsequently solved improving the accuracy of JENDL-3.2.

5.         APPLICATION OF THE DATA

In Japan, the FSXLIB-J3 library produced from JENDL-3.1 has been used as a standard continuous energy cross section library for MCNP.

6.         SOURCE AND SCOPE OF DATA

The FSXJ32 is a temperature-dependent continuous-energy cross-section library for MCNP based on the Japanese Evaluated Nuclear Data File JENDL-3.2. Temperatures at which the library is prepared are 293, 600, 900, 1200, 1500 and 2000K. The library contains cross section data for all the 340 nuclides stored in JENDL-3.2. The library contains 6 files.

7.         DISCUSSION OF THE DATA RETRIEVAL PROGRAM

A few minutes was needed to convert the library to binary (using the makxsf code).  The nuclear data processing system NJOY-97 was used.

8.         DATA FORMAT AND COMPUTER

(RSICC ID: D00244MNYCP00; NEA-14247/06)

9.         TYPICAL RUNNING TIME

Run times vary depending on a number of factors.

10.        REFERENCE

K. Kosako et al., FSXLIB-J3R2: A Continuous Energy Cross Section Library for MCNP based on JENDL-3.2 JAERI-Data/Code 94-020 (December 1994).

Pintai ZHAO and Hideki TAKANO, Sensitivity Analysis of JENDL-3.2 Based on Benchmark Calculations for Fast Reactors JAERI Research 96-010 (March 1996).

11.        CONTENTS OF LIBRARY

The data libraries and electronic document are transmitted on DVD in a WinZIP file. Uncompressed ASCII files require about 3GBytes.

12.        DATE OF ABSTRACT

August 2010.

KEYWORDS:        CROSS SECTIONS, MONTE CARLO METHOD, EVALUATED DATA, NEUTRON CROSS SECTIONS