onr:"swepub:oai:research.chalmers.se:ac9e0941-fea8-4731-8115-8a4eab161432"
Sökning: onr:"swepub:oai:research.chalmers.se:ac9e0941-fea8-4731-8115-8a4eab161432" > Nuclear fragmentati...
- 1 av 1
- Föregående post
- Nästa post
- Till träfflistan
- Zeitlin, C. (författare)
Nuclear fragmentation database for GCR transport code development
- Artikel/kapitelEngelska2010
Förlag, utgivningsår, omfång ...
- Elsevier BV,2010
Nummerbeteckningar
- LIBRIS-ID:oai:research.chalmers.se:ac9e0941-fea8-4731-8115-8a4eab161432
- https://doi.org/10.1016/j.asr.2010.04.035DOI
- https://research.chalmers.se/publication/126054URI
Kompletterande språkuppgifter
- Språk:engelska
- Sammanfattning på:engelska
Ingår i deldatabas
- SwePubSwePub
Klassifikation
Anmärkningar
- A critical need for NASA is the ability to accurately model the transport of heavy ions in the Galactic Cosmic Rays (GCR) through matter, including spacecraft walls, equipment racks, etc. Nuclear interactions are of great importance in the GCR transport problem, as they can cause fragmentation of the incoming ion into lighter ions. Since the radiation dose delivered by a particle is proportional to the square of (charge/velocity), fragmentation reduces the dose delivered by incident ions. The other mechanism by which dose can be reduced is ionization energy loss, which can lead to some particles stopping in the shielding. This is the conventional notion of shielding, but it is not applicable to human spaceflight since the particles in the GCR tend to be too energetic to be stopped in the relatively thin shielding that is possible within payload mass constraints. Our group has measured a large number of fragmentation cross sections, intended to be used as input to, or for validation of, NASA's radiation transport models. A database containing over 200 charge-changing cross sections and over 2000 fragment production cross sections has been compiled. In this report, we examine in detail the contrast between fragment measurements at large acceptance and small acceptance. We use output from the PHITS Monte Carlo code to test our assumptions using as an example Ar-40 data (and simulated data) at a beam energy of 650 MeV/nucleon. We also present preliminary analysis in which isotopic resolution was attained for beryllium fragments produced by beams of B-10 and B-11. Future work on the experimental data set will focus on extracting and interpreting production cross sections for light fragments. (C) 2010 COSPAR. Published by Elsevier Ltd. All rights reserved.
Ämnesord och genrebeteckningar
- NATURVETENSKAP Fysik hsv//swe
- NATURAL SCIENCES Physical Sciences hsv//eng
- model
- Cross section
- Galactic Cosmic Rays
- phits
- Transport
- Monte Carlo
- fe-56
- cross-sections
- PHITS
- Nuclear fragmentation
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Guetersloh, S.Texas A and M University (författare)
- Heilbronn, L.University of Tennessee (författare)
- Miller, J.Lawrence Berkeley National Laboratory (författare)
- Fukumura, A. (författare)
- Iwata, Y. (författare)
- Murakami, T. (författare)
- Sihver, Lembit,1962Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)sihver (författare)
- Texas A and M UniversityUniversity of Tennessee (creator_code:org_t)
Sammanhörande titlar
- Ingår i:Advances in Space Research: Elsevier BV46:6, s. 728-7341879-19480273-1177
Internetlänk
Hitta via bibliotek
- Advances in Space Research (Sök värdpublikationen i LIBRIS)
Till lärosätets databas
- 1 av 1
- Föregående post
- Nästa post
- Till träfflistan
Hitta mer i SwePub
- Av författaren/redakt...
- Zeitlin, C.
- Guetersloh, S.
- Heilbronn, L.
- Miller, J.
- Fukumura, A.
- Iwata, Y.
- visa fler...
- Murakami, T.
- Sihver, Lembit, ...
- visa färre...
- Om ämnet
-
- NATURVETENSKAP
- NATURVETENSKAP
- och Fysik
- Artiklar i publikationen
- Advances in Spac ...
- Av lärosätet
- Chalmers tekniska högskola
Sök utanför SwePub
- Sök vidare i:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - Nationella bibliotekssystem
- LIBRIS.kb.se
