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Heavy fragment production cross sections from 1.05 GeV/nucleon 56Fe in C, Al, Cu, Pb, and CH2 targetsWe have obtained charge-changing cross sections and partial cross sections for fragmentation of 1.05 GeV/nucleon Fe projectiles incident on H, C, Al, Cu, and Pb nuclei. The energy region covered by this experiment is critical for an understanding of galactic cosmic ray propagation and space radiation biophysics. Surviving primary beam particles and fragments with charges from 12 to 25 produced within a forward cone of half-angle 61 mrad were detected using a silicon detector telescope to identify their charge and the cross sections were calculated after correction of the measured yields for finite target thickness effects. The cross sections are compared to model calculations and to previous measurements. Cross sections for the production of fragments with even-numbered nuclear charges are seen to be enhanced in almost all cases.
Document ID
20040089283
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Zeitlin, C. (Lawrence Berkeley National Laboratory Berkeley, California 94720, United States)
Heilbronn, L.
Miller, J.
Rademacher, S. E.
Borak, T.
Carter, T. R.
Frankel, K. A.
Schimmerling, W.
Stronach, C. E.
Chatterjee, A.
Date Acquired
August 21, 2013
Publication Date
July 1, 1997
Publication Information
Publication: Physical review C: Nuclear physics
Volume: 56
Issue: 1
ISSN: 0556-2813
Subject Category
Nuclear Physics
Funding Number(s)
CONTRACT_GRANT: NAG1-1527
CONTRACT_GRANT: W-18265
CONTRACT_GRANT: L1-4230C
Distribution Limits
Public
Copyright
Other
Keywords
NASA Center HQS
NASA Discipline Radiation Health
Non-NASA Center