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Observations of Low Energy Hydrogen and Helium Isotopes during Solar Quiet Times

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. https://resolver.caltech.edu/CaltechAUTHORS:20140409-085000539

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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
Related URLs:
URLURL TypeDescription
http://adsabs.harvard.edu/abs/1973ICRC....1...93HADSAbstract
http://naca.larc.nasa.gov/search.jsp?R=19740047401&qs=N%3D4294060006%2B4294956368%2B4294786973%26No%3D10OrganizationNASA Technical Reports Server (NTRS)
ORCID:
AuthorORCID
Mewaldt, R. A.0000-0003-2178-9111
Stone, E. C.0000-0002-2010-5462
Contact Email Address:dmiles@caltech.edu
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
Group:Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASANAS5-11066
NASANGR-05-002-160
National Research Council of Canada (NRCC)UNSPECIFIED
Alfred P. Sloan Research FellowshipUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1973-05
Record Number:CaltechAUTHORS:20140409-085000539
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140409-085000539
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44804
Collection:CaltechAUTHORS
Deposited By: SWORD User
Deposited On:10 Apr 2014 20:45
Last Modified:20 Feb 2020 14:33

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