Mathew, K. J. ; Murty, S. V. S. (1993) Cosmic ray produced nitrogen in extra terrestrial matter Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 102 (3). pp. 415-437. ISSN 0253-4126
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Official URL: http://www.ias.ac.in/j_archive/epsci/102/3/415-437...
Related URL: http://dx.doi.org/10.1007/BF02841731
Abstract
Production rates of15N by both solar cosmic rays (SCR) and galactic cosmic rays (GCR) have been calculated for moon, as well as meteorites of various sizes. Our production rates of 15N which considered both the reaction channels 16O(p, pn)15O and16O(p, 2p)15N separately are about 30% higher than those by Reedy (1981) who considered only the channel 16O(p, pn)15O and used an empirical scaling factor to estimate the contribution from 16O(p, 2p)15N. Production ratio15N21 Ne is composition dependent and hence is different for various silicate minerals. Additionally the ratio 15N/21Ne is very sensitive to the energy spectrum of the cosmic rays. This fact can be made use of in characterizing as well as in decoupling the SCR and GCR effects in extraterrestrial samples.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | Nitrogen; Neon; Solar Cosmic Rays; Galactic Cosmic Rays; Cosmogenic Nuclides; Moon; Meteorites |
| ID Code: | 23328 |
| Deposited On: | 25 Nov 2010 09:16 |
| Last Modified: | 17 May 2016 07:10 |
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