Validity of two simple rescaling methods for electron/beta dose point kernels in heterogeneous source–target geometry

Autor:	W.D. Reece, Chan Hyeong Kim, Sang Hyun Cho
Rok vydání:	2004
Předmět:	Physics Radiation Linear range Simple (abstract algebra) Beta (plasma physics) Monte Carlo method Dose point kernel Point (geometry) Geometry Atomic number Electron
Zdroj:	Radiation Physics and Chemistry. 69:265-272
ISSN:	0969-806X
DOI:	10.1016/s0969-806x(03)00475-4
Popis:	Dose calculations around electron-emitting metallic spherical sources were performed up to the X 90 distance of each electron energy ranging from 0.5 to 3.0 MeV using the MCNP 4C Monte Carlo code and the dose point kernel (DPK) method with the DPKs rescaled using the linear range ratio and physical density ratio, respectively. The results show that the discrepancy between the MCNP and DPK results increases with the atomic number of the source (i.e., heterogeneity in source–target geometry), regardless of the rescaling method used. The observed discrepancies between the MCNP and DPK results were up to 100% for extreme cases such as a platinum source immersed in water.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4327f0d65dbeaab3e7bbd4d1d93d1556 https://doi.org/10.1016/s0969-806x(03)00475-4 Zobrazit plný text záznamu Full Text from ScienceDirect