title: Monte Carlo calculations of monoenergetic electron depth dose distributions in LiF chips: skin dose correction factors for beta rays.
abstract: Monte Carlo calculations have been carried out for monoenergetic electrons from 0.1 to 4 MeV irradiating LiF chips in both perpendicular and isotropic geometry. This enabled the calculation of skin dose correction factors (beta factors) for typical beta energy spectra as measured with a beta-ray spectrometer at CANDU nuclear generating stations. The correction factors were estimated by averaging the depth dose distributions for the monoenergetic electrons over the experimentally measured beta-ray spectra. The calculations illustrate the large uncertainty in beta factors arising from the unknown angular distribution of the beta-ray radiation field and uncertainties in the shape of the beta-ray spectra below 500 keV.
authors.affiliation: Physics Department. Ben Gurion University of the Negev, Beersheva, Israel.
authors.forename: Y S
authors.initials: YS
authors.lastname: Horowitz
authors.forename: C R
authors.initials: CR
authors.lastname: Hirning
authors.forename: P
authors.initials: P
authors.lastname: Yuen
authors.forename: P
authors.initials: P
authors.lastname: Wong
mesh_terms: D005459:Fluorides; D006801:Humans; D018020:Lithium Compounds; D008961:Models, Structural; D009010:Monte Carlo Method; D011834:Radiation Monitoring / Q000295:instrumentation*; D011839:Radiation, Ionizing; D011874:Radiometry; D012867:Skin / Q000528:radiation effects*
chemical_list: D018020:Lithium Compounds; C027651:lithium fluoride; D005459:Fluorides