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 σ
0, standardization values k
0, and transition probabilities P
γ
. Chemistry databases tend to rely upon direct measurements of the nuclear constants k
0 and P
γ
which are often published in chemistry journals while the physics databases typically include evaluated σ
0 and P
γ
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 γ-ray cross sections σ
γ
from Prompt Gamma-ray Activation Analysis (PGAA) measurements that can also be used to determine k
0 and σ
0 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 σ
0, k
0, σ
γ
, and P
γ
values for NAA and other applications. Preliminary results of this IAEA CRP comparison are given in this paper.
Second Research Coordination Meeting on Reference Database for Neutron Activation Analysis -- Summary Report