Monte Carlo methods in ICF

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Monte Carlo methods appropriate to simulate the transport of x-rays, neutrons, ion and electrons in Inertial Confinement Fusion targets are described and analyzed. The Implicit Monte Carlo method of x-ray transport handles symmetry within indirect drive ICF hohlraums well, but can be improved 50X in efficiency by angular biasing the x-rays towards the fuel capsule. Accurate simulation of thermonuclear burns nd burn diagnostics involves detailed particle source spectra, charged particle ranges, inflight reaction kinematics, corrections for bulk and thermal Doppler effects and variance reduction to obtain adequate statistics for rare events. It is found that the effects of angular Coulomb ... continued below

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22 p.; Other: FDE: PDF; PL:

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Zimmerman, G.B. June 24, 1997.

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Description

Monte Carlo methods appropriate to simulate the transport of x-rays, neutrons, ion and electrons in Inertial Confinement Fusion targets are described and analyzed. The Implicit Monte Carlo method of x-ray transport handles symmetry within indirect drive ICF hohlraums well, but can be improved 50X in efficiency by angular biasing the x-rays towards the fuel capsule. Accurate simulation of thermonuclear burns nd burn diagnostics involves detailed particle source spectra, charged particle ranges, inflight reaction kinematics, corrections for bulk and thermal Doppler effects and variance reduction to obtain adequate statistics for rare events. It is found that the effects of angular Coulomb scattering must be included in models of charged particle transport through heterogeneous materials.

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22 p.; Other: FDE: PDF; PL:

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OSTI as DE98051123

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  • 13. international conference on laser interaction and related plasma phenomena, Monterey, CA (United States), 13-18 Apr 1997

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  • Other: DE98051123
  • Report No.: UCRL-JC--126845
  • Report No.: CONF-970407--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 641742
  • Archival Resource Key: ark:/67531/metadc691191

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  • June 24, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 17, 2016, 2:38 p.m.

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Zimmerman, G.B. Monte Carlo methods in ICF, article, June 24, 1997; California. (digital.library.unt.edu/ark:/67531/metadc691191/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.