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Title: Comparison of IUPAC k0 Values and Neutron Cross Sections to Determine a Self-consistent Set of Data for Neutron Activation Analysis

Abstract

Independent databases of nuclear constants for Neutron Activation Analysis (NAA) have been independently maintained by the physics and chemistry communities for many year. They contain thermal neturon cross sections s0, standardization values k0, and transition probabilities Pg. Chemistry databases tend to rely upon direct measurements of the nuclear constants k0 and Pg which are often published in chemistry journals while the physics databases typically include evaluated s0 and Pg data from a variety of experiments published mainly in physics journals. The IAEA/LBNL Evaluated Gamma-ray Activation File (EGAF) also contains prompt and delayed g-ray cross sections sg from Prompt Gamma-ray Activation Analysis (PGAA) measurements that can also be used to determine k0 and s0 values. As a result several independent databases of fundamental constants for NAA have evolved containing slightly different and sometimes discrepant results. An IAEA CRP for a Reference Database for Neutron Activation Analysis was established to compare these databases and investigate the possibilitiy of producing a self-consistent set of s0, k0, sg, and Pg values for NAA and other applications. Preliminary results of this IAEA CRP comparison are given in this paper.

Authors:
;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Nuclear Science Division
OSTI Identifier:
1023383
Report Number(s):
LBNL-4682E
Journal ID: ISSN 0033-8230; RAACAP; TRN: US1104523
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Radiochimica Acta
Additional Journal Information:
Journal Name: Radiochimica Acta; Journal ID: ISSN 0033-8230
Country of Publication:
United States
Language:
English
Subject:
42; 37; 07; 12; 73; 22; 38; ACTIVATION ANALYSIS; CHEMISTRY; COMMUNITIES; CROSS SECTIONS; FUNDAMENTAL CONSTANTS; IAEA; NEUTRON ACTIVATION ANALYSIS; NEUTRONS; PHYSICS; STANDARDIZATION; Neutrons, cross sections, PGAA, statistical model, gamma-ray

Citation Formats

Firestone, Richard B, and Revay, Zsolt. Comparison of IUPAC k0 Values and Neutron Cross Sections to Determine a Self-consistent Set of Data for Neutron Activation Analysis. United States: N. p., 2009. Web.
Firestone, Richard B, & Revay, Zsolt. Comparison of IUPAC k0 Values and Neutron Cross Sections to Determine a Self-consistent Set of Data for Neutron Activation Analysis. United States.
Firestone, Richard B, and Revay, Zsolt. Tue . "Comparison of IUPAC k0 Values and Neutron Cross Sections to Determine a Self-consistent Set of Data for Neutron Activation Analysis". United States. https://www.osti.gov/servlets/purl/1023383.
@article{osti_1023383,
title = {Comparison of IUPAC k0 Values and Neutron Cross Sections to Determine a Self-consistent Set of Data for Neutron Activation Analysis},
author = {Firestone, Richard B and Revay, Zsolt},
abstractNote = {Independent databases of nuclear constants for Neutron Activation Analysis (NAA) have been independently maintained by the physics and chemistry communities for many year. They contain thermal neturon cross sections s0, standardization values k0, and transition probabilities Pg. Chemistry databases tend to rely upon direct measurements of the nuclear constants k0 and Pg which are often published in chemistry journals while the physics databases typically include evaluated s0 and Pg data from a variety of experiments published mainly in physics journals. The IAEA/LBNL Evaluated Gamma-ray Activation File (EGAF) also contains prompt and delayed g-ray cross sections sg from Prompt Gamma-ray Activation Analysis (PGAA) measurements that can also be used to determine k0 and s0 values. As a result several independent databases of fundamental constants for NAA have evolved containing slightly different and sometimes discrepant results. An IAEA CRP for a Reference Database for Neutron Activation Analysis was established to compare these databases and investigate the possibilitiy of producing a self-consistent set of s0, k0, sg, and Pg values for NAA and other applications. Preliminary results of this IAEA CRP comparison are given in this paper.},
doi = {},
url = {https://www.osti.gov/biblio/1023383}, journal = {Radiochimica Acta},
issn = {0033-8230},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {12}
}