Differential Die-Away Instrument: Report on Benchmark Measurements and Comparison with Simulation for the Effects of Neutron Poisons

Goodsell, Alison Victoria¹  Swinhoe, Martyn Thomas¹  Henzl, Vladimir¹  Rael, Carlos D.¹  Desimone, David J.¹ 

[1] Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

关键词: Isotope & Radiation Sources(07);    Mgmt Of Radioactive & Non-radioactive Wastes from Nuclear Facilities(12);    Nuclear Disarmament;    Safeguards;    & Physical Protection(98);    Nuclear Fuel Cycle & Fuel Materials(11);    Nuclear Physics & Radiation Physics(73) differential die away;    neutron poison;    absorber;    gadolinium;   

DOI  :  10.2172/1177167
RP-ID  :  LA-UR--15-22259
PID  :  OSTI ID: 1177167

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来源: SciTech Connect

【 摘 要 】

In this report, new experimental data and MCNPX simulation results of the differential die-away (DDA) instrument response to the presence of neutron absorbers are evaluated. In our previous fresh nuclear fuel experiments and simulations, no neutron absorbers or poisons were included in the fuel definition. These new results showcase the capability of the DDA instrument to acquire data from a system that better mimics spent nuclear fuel.