PuSH - Publication Server of Helmholtz Zentrum München

Export: TXT Text RIS Endnote (RIS) BIB BibTeX
Trovati, S.* ; Ballarini, F.* ; Battistoni, G.* ; Cerutti, F.* ; Fasso, A.* ; Ferrari, A.* ; Gadioli, E.* ; Garzelli, M.V.* ; Mairani, A.* ; Ottolenghi, A.* ; Paretzke, H.G. ; Parini, V.* ; Pelliccioni, M.* ; Pinsky, L.* ; Sala, P.R.* ; Scannicchio, D.* ; Zankl, M.

Human exposure to space radiation: Role of primary and secondary particles.

Radiat. Prot. Dosim. 122, 362-366 (2006)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
Human exposure to space radiation implies two kinds of risk, both stochastic and deterministic. Shielding optimisation therefore represents a crucial goal for long-term missions, especially in deep space. In this context, the use of radiation transport codes coupled with anthropomorphic phantoms allows to simulate typical radiation exposures for astronauts behind different shielding, and to calculate doses to different organs. In this work, the FLUKA Monte Carlo code and two phantoms, a mathematical model and a voxel model, were used, taking the Galactic Cosmic Rays (GCR) spectra from the model of Badhwar and O'Neill. The time integral spectral proton fluence of the August 1972 Solar Particle Event (SPE) was represented by an exponential function. For each aluminium shield thickness, besides total doses the contributions from primary and secondary particles for different organs and tissues were calculated separately. More specifically, organ-averaged absorbed doses, dose equivalents and a form of ‘biological dose’, defined on the basis of initial (clustered) DNA damage, were calculated. As expected, the SPE doses dramatically decreased with increasing shielding, and doses in internal organs were lower than in skin. The contribution of secondary particles to SPE doses was almost negligible; however it is of note that, at high shielding (10 g cm–2), most of the secondaries are neutrons. GCR organ doses remained roughly constant with increasing Al shielding. In contrast to SPE results, for the case of cosmic rays, secondary particles accounted for a significant fraction of the total dose.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Scopus
Cited By
Altmetric
0.490
0.000
9
16
Tags
Annotations
Special Publikation
Hide on homepage

Edit extra information
Edit own tags
Private
Edit own annotation
Private
Hide on publication lists
on hompage
Mark as special
publikation
Publication type Article: Journal article
Document type Scientific Article
Keywords space radiation; shielding; organ dose; voxel models; DNA damage; primary particles
Language english
Publication Year 2006
HGF-reported in Year 0
ISSN (print) / ISBN 0144-8420
e-ISSN 1742-3406
Conference Title 14th Symposium on Microdosimetry
Conference Date 13-18 November 2005
Conference Location Venice, Italy
Journal Radiation Protection Dosimetry
Quellenangaben Volume: 122, Issue: 1-4, Pages: 362-366 Article Number: , Supplement: ,
Publisher Oxford University Press
Publishing Place Oxford
Reviewing status Peer reviewed
Institute(s) Institute of Radiation Protection (ISS)
POF-Topic(s) 30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Research field(s) Radiation Sciences
PSP Element(s) G-501100-008
DOI 10.1093/rpd/ncl438
Scopus ID 34347381340
Erfassungsdatum 2007-06-13
[➜Report correction]