Hurford, G. J. and Mewaldt, R. A. and Stone, E. C. and Vogt, R. E.
(1973)
Observations of Low Energy Hydrogen and Helium Isotopes during Solar Quiet Times.
Proceedings of the 13th International Cosmic Ray Conference
.
pp. 93-98.
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Abstract
We report a new quiet-time measurement of the relative abundance
of cosmic-ray ^2H and ^4He. The observations were made in selected
time intervals between September 1972 and February 1973 with the
Caltech Electron/Isotope Spectrometer on IMP-7. In the energy
interval 13-29 MeV/nucleon, we find an upper limit to the ^2H to ^4He
ratio of Γ(^2H/^4He)< 0.06. This new upper limit is significantly
lower than finite ^2H/^4He ratios measured in earlier years by other
workers. Possible implications of this new result are discussed.
| Item Type: | Article |
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| Contact Email Address: | dmiles@caltech.edu |
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| Additional Information: | © 1973 University of Colorado.
Provided by the NASA Astrophysics Data System.
This work was supported in part by NASA under
contract NAS5-11066 and Grant 05-002-160. One of us (Hurford) received support
from the National Research Council of Canada while another (Stone) was an
Alfred P. Sloan research fellow during this period.
Space Radiation Laboratory
SRL ID #: 1973-05 |
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| Group: | Space Radiation Laboratory |
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| Funders: | | Funding Agency | Grant Number |
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| NASA | NAS5-11066 | | NASA | NGR-05-002-160 | | National Research Council of Canada (NRCC) | UNSPECIFIED | | Alfred P. Sloan Research Fellowship | UNSPECIFIED |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Space Radiation Laboratory | 1973-05 |
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| Record Number: | CaltechAUTHORS:20140409-085000539 |
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| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140409-085000539 |
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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: | 44804 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
SWORD User
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| Deposited On: | 10 Apr 2014 20:45 |
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| Last Modified: | 20 Feb 2020 14:33 |
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