Yanasak, N. E. and Binns, W. R. and Cummings, A. C. and Christian, E. R. and George, J. S. and Hink, P. L. and Klarmann, J. and Leske, R. A. and Lijowski, M. and Mewaldt, R. A. and Stone, E. C. and von Rosenvinge, T. T. and Wiedenbeck, M. E. (1999) Implications for Cosmic Ray Propagation from ACE Measurements of Radioactive Clock Isotope Abundances. In: Proceedings of the 26th International Cosmic Ray Conference. Vol.3. International Union of Pure and Applied Physics , pp. 9-12. https://resolver.caltech.edu/CaltechAUTHORS:20150213-094618167
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Abstract
Galactic cosmic rays (GCR) interact to produce secondary fragments as they pass through the interstellar medium (ISM). Abundances of the long-lived radioactive secondaries ^(10)Be, ^(26)Al, ^(36)Cl, and ^(54)Mn can be used to a derive the confinement time of cosmic rays in the galaxy. Abundances for these species have been measured recently using the Cosmic Ray Isotope Spectrometer (CRIS) aboard the Advanced Composition Explorer (ACE) spacecraft. To interpret this data we have modeled the production and propagation of the radioactive secondaries, taking into account recently published isotopic production cross-sections. Abundances for all species are consistent with a confinement time of π_(esc) ~22 x 10^6 years.
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| Additional Information: | © University of Utah. Provided by the NASA Astrophysics Data System. | ||||||||||||||||
| Group: | Space Radiation Laboratory | ||||||||||||||||
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| Record Number: | CaltechAUTHORS:20150213-094618167 | ||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150213-094618167 | ||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||
| ID Code: | 54821 | ||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||
| Deposited By: | Deborah Miles | ||||||||||||||||
| Deposited On: | 20 Feb 2015 02:07 | ||||||||||||||||
| Last Modified: | 09 Mar 2020 13:19 |
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