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ASREP: a computer program for automatic search of unresolved resonance parameters

Abstract

In evaluated nuclear data libraries such as JENDL, individual resonance parameters are given in the low neutron energy range that is the resolved resonance region. The energy range higher than it is called the unresolved resonance region where the Doppler effects are still important (usually below tens keV) and the average resonance parameters (unresolved resonance parameters) are given. The program ASREP is a computer program to determine the unresolved resonance parameters so as to reproduce the average cross sections. Obtained unresolved resonance parameters are outputted in the ENDF format. The program ASREP has been used for many years to evaluate the nuclear data for Japanese Evaluated Nuclear Data Library (JENDL). This report describes formulas used in ASREP, usage of ASREP, and gives an example of the evaluation with ASREP. (author)
Authors:
Kikuchi, Yasuyuki; Nakagawa, Tsuneo; [1]  Nakajima, Yutaka
  1. Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment
Publication Date:
Apr 01, 1999
Product Type:
Technical Report
Report Number:
JAERI-Data/Code-99-025
Reference Number:
SCA: 663430; PA: JPN-99:050389; EDB-99:082832; SN: 99002124419
Resource Relation:
Other Information: PBD: Apr 1999
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; A CODES; NUCLEAR DATA COLLECTIONS; NEUTRON REACTIONS; DIFFERENTIAL CROSS SECTIONS; RESONANCE NEUTRONS; HAUSER-FESHBACH THEORY; LEVEL WIDTHS; ENERGY-LEVEL DENSITY; 663430; NUCLEON-INDUCED REACTIONS AND SCATTERING
OSTI ID:
10147639
Research Organizations:
Japan Atomic Energy Research Inst., Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE99760442; TRN: JP9950389
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
JPN
Size:
53 p.
Announcement Date:
Sep 10, 1999

Citation Formats

Kikuchi, Yasuyuki, Nakagawa, Tsuneo, and Nakajima, Yutaka. ASREP: a computer program for automatic search of unresolved resonance parameters. Japan: N. p., 1999. Web.
Kikuchi, Yasuyuki, Nakagawa, Tsuneo, & Nakajima, Yutaka. ASREP: a computer program for automatic search of unresolved resonance parameters. Japan.
Kikuchi, Yasuyuki, Nakagawa, Tsuneo, and Nakajima, Yutaka. 1999. "ASREP: a computer program for automatic search of unresolved resonance parameters." Japan.
@misc{etde_10147639,
title = {ASREP: a computer program for automatic search of unresolved resonance parameters}
author = {Kikuchi, Yasuyuki, Nakagawa, Tsuneo, and Nakajima, Yutaka}
abstractNote = {In evaluated nuclear data libraries such as JENDL, individual resonance parameters are given in the low neutron energy range that is the resolved resonance region. The energy range higher than it is called the unresolved resonance region where the Doppler effects are still important (usually below tens keV) and the average resonance parameters (unresolved resonance parameters) are given. The program ASREP is a computer program to determine the unresolved resonance parameters so as to reproduce the average cross sections. Obtained unresolved resonance parameters are outputted in the ENDF format. The program ASREP has been used for many years to evaluate the nuclear data for Japanese Evaluated Nuclear Data Library (JENDL). This report describes formulas used in ASREP, usage of ASREP, and gives an example of the evaluation with ASREP. (author)}
place = {Japan}
year = {1999}
month = {Apr}
}