Hiroshima Air-Over-Ground Analysis: Comparison of DORT and MCNP Calculations

Santoro, RT

Oak Ridge National Laboratory

关键词: 46 Instrumentation Related To Nuclear Science And Technology;    Spectra;    Lanl;    Neutron Emission;    Ornl;   

DOI  :  10.2172/814271
RP-ID  :  ORNL/TM-2001/160
RP-ID  :  AC05-00OR22725
RP-ID  :  814271

美国|英语

来源: UNT Digital Library

【 摘 要 】

Monte Carlo (MCNP4B) and Discrete Ordinates (DORT) calculations were carried out to estimate {sup 60}Co and {sup 152}Eu activation as a function of ground range due to neutrons emitted from the Hiroshima A-bomb. Results of ORNL DORT and MCNP calculations using RZ cylindrical air-over-ground models are compared with LANL MCNP results obtained with an XYZ air-over-ground model. All of the calculations were carried out using ENDF/B-VI cross-section data and detailed angle and energy resolved neutron emission spectra from the weapon. Favorable agreement was achieved for the {sup 60}Co and {sup 152}Eu activation for ground ranges out to 1000m from the three calculations.