NDLI: Monte Carlo calculations of energy deposition distributions of electrons below 20 keV in protein

Content Provider	Springer Nature Link
Author	Tan, Zhenyu Liu, Wei
Copyright Year	2014
Abstract	The distributions of energy depositions of electrons in semi-infinite bulk protein and the radial dose distributions of point-isotropic mono-energetic electron sources [i.e., the so-called dose point kernel (DPK)] in protein have been systematically calculated in the energy range below 20 keV, based on Monte Carlo methods. The ranges of electrons have been evaluated by extrapolating two calculated distributions, respectively, and the evaluated ranges of electrons are compared with the electron mean path length in protein which has been calculated by using electron inelastic cross sections described in this work in the continuous-slowing-down approximation. It has been found that for a given energy, the electron mean path length is smaller than the electron range evaluated from DPK, but it is large compared to the electron range obtained from the energy deposition distributions of electrons in semi-infinite bulk protein. The energy dependences of the extrapolated electron ranges based on the two investigated distributions are given, respectively, in a power-law form. In addition, the DPK in protein has also been compared with that in liquid water. An evident difference between the two DPKs is observed. The calculations presented in this work may be useful in studies of radiation effects on proteins.
Starting Page	427
Ending Page	435
Page Count	9
File Format	PDF
ISSN	0301634X
Journal	Radiation and Environmental Biophysics
Volume Number	53
Issue Number	2
e-ISSN	14322099
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-02-12
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Energy deposition Electron range Protein Monte Carlo simulation Radiation effect Biophysics and Biological Physics Effects of Radiation/Radiation Protection Environmental Physics Environmental Monitoring/Analysis Ecosystems
Content Type	Text
Resource Type	Article
Subject	Biophysics Environmental Science Radiation

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