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Limitations (and merits) of PENELOPE as a track-structure code
Stockholm University, Faculty of Science, Medical Radiation Physics (together with KI).
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Number of Authors: 72012 (English)In: International Journal of Radiation Biology, ISSN 0955-3002, E-ISSN 1362-3095, Vol. 88, no 1-2, p. 66-70Article in journal (Refereed) Published
Abstract [en]

Purpose: To outline the limitations of PENELOPE (acronym of PENetration and Energy LOss of Positrons and Electrons) as a track-structure code, and to comment on modifications that enable its fruitful use in certain microdosimetry and nanodosimetry applications.

Methods: Attention is paid to the way in which inelastic collisions of electrons are modelled and to the ensuing implications for microdosimetry analysis.

Results: Inelastic mean free paths and collision stopping powers calculated with PENELOPE and two well-known optical-data models are compared. An ad hoc modification of PENELOPE is summarized where ionization and excitation of liquid water by electron impact is simulated using tables of realistic differential and total cross sections.

Conclusions: PENELOPE can be employed advantageously in some track-structure applications provided that the default model for inelastic interactions of electrons is replaced by suitable tables of differential and total cross sections.

Place, publisher, year, edition, pages
2012. Vol. 88, no 1-2, p. 66-70
Keywords [en]
Radiation physics, Monte Carlo simulation, microdosimetry
National Category
Biological Sciences Mechanical Engineering Radiology, Nuclear Medicine and Medical Imaging
Identifiers
URN: urn:nbn:se:su:diva-168101DOI: 10.3109/09553002.2011.598209ISI: 000298666000012PubMedID: 21864015OAI: oai:DiVA.org:su-168101DiVA, id: diva2:1305624
Available from: 2019-04-17 Created: 2019-04-17 Last updated: 2019-04-17Bibliographically approved

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Fernández-Varea, José M.Wiklund, Kristin
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