| タイトル | Contribution of proton-induced short range secondaries to the LET spectra on LDEF |
| 本文（外部サイト） | http://hdl.handle.net/2060/19950017393 |
| 著者（英） | Benton, E. R.; Frigo, L. A.; Benton, E. V.; Csige, I. |
| 著者所属（英） | Eril Research, Inc. |
| 発行日 | 1995-02-01 |
| 言語 | eng |
| 内容記述 | The contribution to the LET (linear energy transfer) spectrum from proton-induced short range secondaries was investigated by making measurements of total track density and LET spectra in CR-39 Plastic Nuclear Track Detectors (PNTD's) at varying shielding depths in the A0015 West-side stack. Proton-induced short range secondaries were found to make a significant contribution to the LET spectra, especially in the region above 100 keV/micron. At present, calculational models do not include this component. Total track density was measured at five shielding depths and was seen to increase as a function of shielding. LET spectra were measured under two shielding depths (2.6 and 9.2 g/cm(exp 2)) and stayed fairly constant as a function of shielding. Prerecovery estimates of LET spectra dropped off rapidly in the 100-300 keV/micron region, while the measured LET spectra extended to higher LET's. Track density and LET spectra measurements of secondaries were made in a CR-39 PNTD stack exposed to 154 MeV accelerator protons. Similarities in LET spectra measured in the A0015 experiment and in the 154 MeV accelerator proton stack demonstrate that a useful first step in modeling the contribution to the LET spectra of secondaries induced by the spectrum of trapped protons would be to model a mono-energetic proton beam being transported through a one-dimensional geometry. |
| NASA分類 | ATOMIC AND MOLECULAR PHYSICS |
| レポートNO | 95N23813 |
| 権利 | No Copyright |
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