Neutron Capture gamma ENDF libraries for modeling and identification of neutron sources

Sleaford, B

Lawrence Livermore National Laboratory

关键词: Lawrence Berkeley Laboratory;    46 Instrumentation Related To Nuclear Science And Technology;    Iaea;    Capture;    Neutrons;   

DOI  :  10.2172/923093
RP-ID  :  UCRL-TR-235935
RP-ID  :  W-7405-ENG-48
RP-ID  :  923093

美国|英语

来源: UNT Digital Library

【 摘 要 】

There are a number of inaccuracies and data omissions with respect to gammas from neutron capture in the ENDF libraries used as field reference information and by modeling codes used in JTOT. As the use of Active Neutron interrogation methods is expanded, these shortfalls become more acute. A new, more accurate and complete evaluated experimental database of gamma rays (over 35,000 lines for 262 isotopes up to U so far) from thermal neutron capture has recently become available from the IAEA. To my knowledge, none of this new data has been installed in ENDF libraries and disseminated. I propose to upgrade libraries of {sup 184,186}W, {sup 56}Fe, {sup 204,206,207}Pb, {sup 104}Pd, and {sup 19}F the 1st year. This will involve collaboration with Richard Firestone at LBL in evaluating the data and installing it in the libraries. I will test them with the transport code MCNP5.