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Response Matrix Monte Carlo for electron transport

Conference ·
OSTI ID:6209256
; ;
A Response Matrix Monte Carol (RMMC) method has been developed for solving electron transport problems. This method was born of the need to have a reliable, computationally efficient transport method for low energy electrons (below a few hundred keV) in all materials. Today, condensed history methods are used which reduce the computation time by modeling the combined effect of many collisions but fail at low energy because of the assumptions required to characterize the electron scattering. Analog Monte Carlo simulations are prohibitively expensive since electrons undergo coulombic scattering with little state change after a collision. The RMMC method attempts to combine the accuracy of an analog Monte Carlo simulation with the speed of the condensed history methods. The combined effect of many collisions is modeled, like condensed history, except it is precalculated via an analog Monte Carol simulation. This avoids the scattering kernel assumptions associated with condensed history methods. Results show good agreement between the RMMC method and analog Monte Carlo. 11 refs., 7 figs., 1 tabs.
Research Organization:
Lawrence Livermore National Lab., CA (USA)
Sponsoring Organization:
DOE/DP
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
6209256
Report Number(s):
UCRL-JC-105409; CONF-9011149--10; ON: DE91006248
Country of Publication:
United States
Language:
English

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Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450200 -- Military Technology
Weaponry
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654001* -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE TRANSPORT
CROSS SECTIONS
DISTRIBUTION FUNCTIONS
ENERGY LOSSES
EQUATIONS
FUNCTIONS
INELASTIC SCATTERING
LOSSES
MONTE CARLO METHOD
RADIATION TRANSPORT
REACTOR KINETICS EQUATIONS
RESPONSE MATRIX METHOD
SCATTERING