Systematic Calculation Method of Fission Yield Variation with Neutron Energy
A technology of neutron energy and fission yield, applied in the field of yield-energy relationship research with systematic methods, can solve the problems that the fine structure of yield-energy cannot be reproduced, multi-fission mode is not considered, etc.
Active Publication Date: 2014-04-09
CHINA INSTITUTE OF ATOMIC ENERGY
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This processing method does not consider the physical processes such as multi-fission mode and fragment neutron emission, and cannot reproduce and explain the fine structure of yield-energy in the energy region of multiple chance fission. subtle changes in energy
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The invention belongs to the technical field of nuclear physics. It discloses a systemic calculation method for the change of fission yield with neutron energy. The method is to fit two sets of parameters to determine the Gaussian function at two points, and the parameters at other excitation energies are determined by their respective functional relationships, so that The mass distribution of the original fission fragments is obtained; then according to the prompt neutron emission number v(A, Ec) of each fragment during the composite nuclear fission of the excitation energy, the chain yield of each mass chain after fission induced by different neutron energies is obtained. The calculation results reasonably explain the experimental results of the yield variation with the incident neutron energy, and a more accurate and reliable yield-energy curve is obtained.
Description
Systematic Calculation Method of Fission Yield Variation with Neutron Energy technical field The invention belongs to the technical field of nuclear physics, relates to the technical field of fission yield, and specifically relates to a method for studying the yield-energy relationship with a systematic method. Background technique At present, there are many works using the multi-Gaussian function fitting method for the chain yield and mass distribution after neutron emission. 235 Due to the lack of experimental data on the mass yield before U fission neutron emission, no relevant articles have been published. German C.M.Zoller systematically studied 1-500MeV neutron-induced 238 The relationship between the mass yield and energy of fragments before U fission neutron emission is obtained, and the relationship between Gaussian function fitting parameters and neutron energy is obtained. This processing method does not consider the physical processes such as multi-fission mo...
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IPC IPC(8): G06F19/00G99Z99/00
Inventor 杨毅
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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