Prince, Thomas A. and Ling, James C. and Mahoney, William A. and Riegler, Guenter R. and Jacobson, Allan S.
(1982)
A High Resolution Measurement of the 2.223 MeV Neutron Capture Line in a Solar Flare.
Astrophysical Journal, 255
(1).
L81-L84.
ISSN 2041-8205.
doi:10.1086/183773.
https://resolver.caltech.edu/CaltechAUTHORS:20140421-110609593
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Abstract
An intense solar flare lasting 40 s was observed by the HEAO 3 γ-ray spectrometer on 1979
November 9 at 3:05 UT. The flare was observed in four high-resolution germanium detectors as well
as in five CsI shield detectors over an energy range of 100 keV to above 5 MeV. Of particular interest
is a line feature at 2.2248 ± 0.0010 MeV. The precise energy measurement provides unambiguous
evidence that this is the ^1H(n,γ)^2H line resulting from neutron capture on hydrogen. An upper limit
of 5 keV is found for the natural line width. The time dependence of the neutron capture line is
discussed as well as the overall characteristics of the November 9 flare.
| Item Type: | Article |
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| Contact Email Address: | dmiles@caltech.edu |
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| Additional Information: | © 1982 The American Astronomical Society.
Received 1981 November 4; accepted 1981 December 23.
The authors acknowledge helpful comments and
suggestions from a number of colleagues including E.
Chupp, H. Hudson, E. Stone, R. Vogt, and J. Willett.
This work was carried out at the California Institute of
Technology under NASA grant NGR 05-002-160 and at
the Jet Propulsion Laboratory under NASA contract
NAS 7-100.
Space Radiation Laboratory
SRL ID #: 1981-30. |
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| Group: | Space Radiation Laboratory |
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| Funders: | | Funding Agency | Grant Number |
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| NASA | NGR 05-002-160 | | NASA | NAS 7-100 |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Space Radiation Laboratory | 1981-30 |
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| Issue or Number: | 1 |
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| DOI: | 10.1086/183773 |
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| Record Number: | CaltechAUTHORS:20140421-110609593 |
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| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140421-110609593 |
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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: | 45076 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
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| Deposited On: | 23 Apr 2014 19:25 |
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| Last Modified: | 10 Nov 2021 17:00 |
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