Published January 2000
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Cosmic Ray Source Abundances and the Acceleration of Cosmic Rays
Abstract
The galactic cosmic ray elemental source abundances display a fractionation that is possibly based on first ionization potential (FIP) or volatility. A few elements break the general correlation of FIP and volatility and the abundances of these may help to distinguish between models for the origin of the cosmic ray source material. Data from the Cosmic Ray Isotope Spectrometer instrument on NASA's Advanced Composition Explorer spacecraft were used to derive source abundances for several of these elements (Na, Cu, Zn, Ga, Ge). Three (Na, Cu, Ge) show depletions which could be consistent with a volatility-based source fractionation model.
Additional Information
© 2000 American Institute of Physics. This work was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, the Goddard Space Flight Center, and Washington University.Attached Files
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Additional details
- Eprint ID
- 48903
- Resolver ID
- CaltechAUTHORS:20140826-100748785
- NASA
- NAG5-6912
- JPL
- Goddard Space Flight Center
- Washington University
- Created
-
2014-08-26Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Series Name
- AIP Conference Proceedings
- Series Volume or Issue Number
- 528
- Other Numbering System Name
- Space Radiation Laboratory
- Other Numbering System Identifier
- 2000-36