Modification and benchmarking of MCNP for low-energy tungsten spectra

J. R. Mercier; D. T. Kopp; W. D. McDavid; S. B. Dove; J. L. Lancaster; D. M. Tucker

doi:10.1118/1.1288397

Modification and benchmarking of MCNP for low-energy tungsten spectra

J. R. Mercier, D. T. Kopp, W. D. McDavid, S. B. Dove, J. L. Lancaster, D. M. Tucker

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

The MCNP Monte Carlo radiation transport code was modified for diagnostic medical physics applications. In particular, the modified code was thoroughly benchmarked for the production of polychromatic tungsten x-ray spectra in the 30-150 kV range. Validating the modified code for coupled electron-photon transport with benchmark spectra was supplemented with independent electron-only and photon-only transport benchmarks. Major revisions to the code included the proper treatment of characteristic K x-ray production and scoring, new impact ionization cross sections, and new bremsstrahlung cross sections. Minor revisions included updated photon cross sections, electron-electron bremsstrahlung production, and K x-ray yield. The modified MCNP code is benchmarked to electron backscatter factors, x-ray spectra production, and primary and scatter photon transport.

Original language	English (US)
Pages (from-to)	2680-2687
Number of pages	8
Journal	Medical physics
Volume	27
Issue number	12
DOIs	https://doi.org/10.1118/1.1288397
State	Published - 2000

Keywords

Benchmarking
MCNP
Monte Carlo
X-ray spectra

ASJC Scopus subject areas

Biophysics
Radiology Nuclear Medicine and imaging

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AU - Mercier, J. R.

AU - Kopp, D. T.

AU - McDavid, W. D.

AU - Dove, S. B.

AU - Lancaster, J. L.

AU - Tucker, D. M.

PY - 2000

Y1 - 2000

N2 - The MCNP Monte Carlo radiation transport code was modified for diagnostic medical physics applications. In particular, the modified code was thoroughly benchmarked for the production of polychromatic tungsten x-ray spectra in the 30-150 kV range. Validating the modified code for coupled electron-photon transport with benchmark spectra was supplemented with independent electron-only and photon-only transport benchmarks. Major revisions to the code included the proper treatment of characteristic K x-ray production and scoring, new impact ionization cross sections, and new bremsstrahlung cross sections. Minor revisions included updated photon cross sections, electron-electron bremsstrahlung production, and K x-ray yield. The modified MCNP code is benchmarked to electron backscatter factors, x-ray spectra production, and primary and scatter photon transport.

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KW - Monte Carlo

KW - X-ray spectra

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Modification and benchmarking of MCNP for low-energy tungsten spectra

Abstract

Keywords

ASJC Scopus subject areas

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