Heavy fragment production cross sections from 1.05 GeV/nucleon {sup 56}Fe in C, Al, Cu, Pb, and CH{sub 2} targets
- Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
- Department of Radiological Health Sciences, Colorado State University, Fort Collins, Colorado 80523 (United States)
- Department of Physics, Virginia State University, Petersburg, Virginia 23806 (United States)
- National Aeronautics and Space Administration, Washington, DC 20546 (United States)
We 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. {copyright} {ital 1997} {ital The American Physical Society}
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 550367
- Journal Information:
- Physical Review, C, Vol. 56, Issue 1; Other Information: PBD: Jul 1997
- Country of Publication:
- United States
- Language:
- English
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