Stone, E. C. and Waddington, C. J. and Binns, W. R. and Garrard, T. L. and Gibner, P. S. and Israel, M. H. and Kertzman, M. P. and Klarmann, J. and Newport, B. J.
(1987)
The Abundances of Ultraheavy Elements in the Cosmic Radiation.
In:
Proceedings of the 21st International Cosmic Ray Conference.
Vol.1.
, Nakau, Russia, pp. 366-369.
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Abstract
Analysis of a new, higher resolution data set from the Heavy Nuclei Experiment on
the HEA0-3 spacecraft has yielded the cosmic ray abundances relative to iron of oddeven
element pairs with atomic number, Z, in the range 33≤Z≤60. The abundances are
consistent with a solar-system source provided an allowance is made for a source
fraetionation based on first ionization potential (FIP). However, extending this analysis·
to element groups with Z>60, we find enhancements of the Pt group (74≤Z≤80)
abundance relative to the solar system and a corresponding increase in the largely
secondary nuclei in the range 62≤Z≤73, in agreement with recent Ariel-6 results. These
abundances suggest an enhancement of the r-process contribution to the source of the
Z > 60 nuclei.
| Item Type: | Book Section |
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| Additional Information: | © INR. Provided by the NASA Astrophysics Data System.
This research was supported in part by NASA under grants
NAG 8-498, 500, and 502 and NCR 05-002-160, 24-005,050, and 26-008-001. |
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| Group: | Space Radiation Laboratory |
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| Funders: | | Funding Agency | Grant Number |
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| NASA | NAG 8-498 | | NASA | NAG 8-500 | | NASA | NAG 8-502 | | NASA | NCR 05-002-160 | | NASA | NCR 24-005-005 | | NASA | NCR 26-008-001 |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Space Radiation Laboratory | 1987-05 |
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| Record Number: | CaltechAUTHORS:20140512-133126620 |
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| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140512-133126620 |
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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| ID Code: | 45693 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
Joy Painter
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| Deposited On: | 12 May 2014 20:48 |
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| Last Modified: | 09 Mar 2020 13:18 |
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