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Comparison of alumi...
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Mancusi, Davide,1980Chalmers tekniska högskola,Chalmers University of Technology
(author)
Comparison of aluminum and lucite for shielding against 1 GeV protons
- Article/chapterEnglish2007
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LIBRIS-ID:oai:research.chalmers.se:bf0e1794-0ce9-4673-8168-bea04696216a
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https://research.chalmers.se/publication/67772URI
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https://doi.org/10.1016/j.asr.2006.11.033DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Shielding is the only countermeasure currently available for exposure to cosmic radiation during space travel. We compared aluminum (Al) and polymethylmethacrylate (PMMA, or lucite) shields of 20 g/cm^2 thickness using 1 GeV protons accelerated at the NASA Space Radiation Laboratory. The dose rate increased after the shield, and the increase was more pronounced after the Al than the PMMA shield. No significant differences in the induction of chromosomal aberrations were observed in human lymphocytes exposed to the same dose with no shield or behind the Al and PMMA blocks. However, the biological effectiveness per incident proton was increased by the shields. Simulations using the General-Purpose Particle and Heavy-Ion Transport Code System (PHITS) show that the increase in dose is caused by target fragments, and aluminum produces more secondary protons than PMMA. Nevertheless, the spectrum of particles behind the shield is confined within the low-LET region, and the biological effectiveness is consequently similar.
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Bertucci, AntonellaUniversita Degli Studi Di Napoli Federico Ii,University of Naples Federico II
(author)
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Gialanella, GiancarloUniversita Degli Studi Di Napoli Federico Ii,University of Naples Federico II
(author)
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Grossi, GianfrancoUniversita Degli Studi Di Napoli Federico Ii,University of Naples Federico II
(author)
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Manti, LorenzoUniversita Degli Studi Di Napoli Federico Ii,University of Naples Federico II
(author)
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Pugliese, MariagabriellaUniversita Degli Studi Di Napoli Federico Ii,University of Naples Federico II
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Rusek, AdamBrookhaven National Laboratory
(author)
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Scampoli, PaolaUniversita Degli Studi Di Napoli Federico Ii,University of Naples Federico II
(author)
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Sihver, Lembit,1962Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)sihver
(author)
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Durante, MarcoUniversita Degli Studi Di Napoli Federico Ii,University of Naples Federico II
(author)
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Chalmers tekniska högskolaUniversita Degli Studi Di Napoli Federico Ii
(creator_code:org_t)
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In:Advances in Space Research: Elsevier BV40:4, s. 581-5851879-19480273-1177
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