Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published February 1, 1981 | Published
Journal Article Open

The isotopic composition of solar flare accelerated magnesium


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.

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.

Attached Files

Published - 1981ApJ___243L_163M.pdf


Files (379.2 kB)
Name Size Download all
379.2 kB Preview Download

Additional details

August 19, 2023
October 25, 2023