Lewis theory for energy straggling in thin layers

Prinja, Anil K.

doi:10.1016/j.nimb.2014.04.001

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Moment-preserving Methods1

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2015

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“…preserving strategies that are central to this approach. The moment-preserving strategy is motivated by Lewis theory [21,22], where Lewis showed that one can relate space-angle moments of the angular flux to momentum-transfer moments of the elastic scattering DCS. In addition, the eigenvalues of the elastic collision operator are directly dependent on the momentum-transfer moments.…”

Section: Moment-preserving Methodsmentioning

confidence: 99%

A computationally efficient moment-preserving Monte Carlo electron transport method with implementation in Geant4

Dixon

2015

Nuclear Instruments and Methods in Physics Research Section B:

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The moment-preserving method, demonstrated as a viable alternative to condensed history for electrons, is extended to protons. Given the generality and the flexibility of the method, a discrete Coulomb scattering and discrete impact-ionization differential cross-section library for protons was readily developed and existing Geant4 electron discrete process and model classes were extended to make use of the new proton library. It is shown that levels of efficiency and accuracy similar to those demonstrated for electrons are obtainable for protons in straight-ahead, energy-loss problems. However, in problems with deflection, agreement is strongly dependent on the proton energy. That is, good agreement was observed in the few MeV range, while unsatisfactory agreement was observed in problems with proton energies above 100-MeV.

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Section: Moment-preserving Methodsmentioning

confidence: 99%

A computationally efficient moment-preserving Monte Carlo electron transport method with implementation in Geant4

Dixon

2015

Nuclear Instruments and Methods in Physics Research Section B:

View full text Add to dashboard Cite

show abstract

Lewis theory for energy straggling in thin layers

Cited by 1 publication

References 6 publications

A computationally efficient moment-preserving Monte Carlo electron transport method with implementation in Geant4

A computationally efficient moment-preserving Monte Carlo electron transport method with implementation in Geant4

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