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The isotopic composition of solar flare accelerated magnesium

Mewaldt, R. A. and Spalding, J. D. and Stone, E. C. and Vogt, R. E. (1981) The isotopic composition of solar flare accelerated magnesium. Astrophysical Journal, 243 (3). L163-L165. ISSN 0004-637X. doi:10.1086/183465.

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We report observations of energetic solar particles from the 1978 September 23 solar flare in which the three stable isotopes of magnesium are clearly resolved with a mass resolution of 0.23 amu. We find ^(25)Mg/^(24)Mg = 0.14 (+0.05, -0.02) and ^(26)Mg/^(24)Mg = 0.15 (+0.04, -0.03) in the energy interval 12-36 MeV per nucleon. These observations are consistent with terrestrial magnesium isotopic abundances.

Item Type:Article
Related URLs:
URLURL TypeDescription
Mewaldt, R. A.0000-0003-2178-9111
Stone, E. C.0000-0002-2010-5462
Additional Information:© 1981 The American Astronomical Society. Received 1980 September 8; accepted 1980 October 24. W. E. Althouse, A. C. Cummings, and T. L. Garrard made significant contributions to the design and development of the HIST instrument. This work was supported in part by NASA under contract NAS5-20721 and grant NGR 05-002-160.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANGR 05-002-160
Subject Keywords:solar system: general - Sun: abundances - Sun: flares
Issue or Number:3
Record Number:CaltechAUTHORS:20140212-074133629
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43786
Deposited By: Tony Diaz
Deposited On:13 Feb 2014 22:03
Last Modified:10 Nov 2021 16:43

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