The isotopic composition of solar flare accelerated magnesium

Details The isotopic composition of solar flare accelerated magnesium The isotopic composition of solar flare accelerated magnesium

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...243l.163m&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 243, Feb. 1, 1981, p. L163-L165.

Astronomy and Astrophysics

Astrophysics

7

Abundance, Energetic Particles, Magnesium Isotopes, Solar Corpuscular Radiation, Solar Flares, International Sun Earth Explorer 3, Mass Distribution, Maximum Likelihood Estimates, Particle Acceleration, Particle Telescopes, Solar System

Scientific paper

Measurements of the abundances of three isotopes of magnesium in solar energetic particles are reported. Data were obtained from the Heavy Isotope Spectrometer Telescope on board the ISEE 3 spacecraft during a large solar particle event following the 2B solar flare of September 23, 1978. A two-dimensional maximum likelihood analysis of the mass determinations for each event, which were taken with a resolution of 0.23 amu, indicates a Mg-25/Mg-24 ratio of 0.14 (+0.05, -0.02) and a Mg-26/Mg-24 ratio of 0.15 (+0.04, -0.03) in the energy interval 12-36 MeV/n. The results are consistent with terrestrial magnesium isotope abundances.

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