| タイトル | Fragmentation of 200 and 244 MeV/u Carbon Beams in Thick Tissue-Like Absorbers |
| 本文（外部サイト） | http://hdl.handle.net/2060/20050041990 |
| 著者（英） | Bamblevski, V. P.; Golovchenko, A. N.; Skvar, J.; Schardt, D.; Wilson, J. W.; Tripathi, R. K.; Sihver, L.; Tretyskova, S. P.; Ili, R. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1999-01-01
1999 |
| 言語 | eng |
| 内容記述 | Stacks consisting of thin CR-39 sheets sandwiched between thick Lucite and water absorbers were perpendicularly bombarded by C-12 ions at 200 and 244 MeV/u. Track radius distributions representing the charge composition of the fragmented beams were automatically measured by a particle track analysis system. After analysis of the nuclear charge distributions, the total charge removal cross sections and elemental production cross sections of fragments with atomic numbers from 5 to 3, were obtained down to the lower energies (approximately 50 and 100 MeV/u, respectively). It has been found that the measured total charge removal cross section agrees with theoretical predictions within approximately 10% and very well with previous experiments in corresponding energy regions. Two model calculations for production of B fragment are in good agreement with our measured data while a third model overestimates it by approximately 12%. Theoretical cross sections for Be and Li fragments differ strongly among the different models and from measured values. |
| NASA分類 | Inorganic, Organic and Physical Chemistry |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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