Isotopic composition of magnesium nuclei in solar flares

Journal Article · Wed Apr 01 04:00:00 EST 1981 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/183518· OSTI ID:6316294

Dietrich, W F; Simpson, J A

The isotopic ratio /sup 26/Mg//sup 24/Mg = 0.13 +- 0.04 has been obtained from satellite measurements of nuclei accelerated to 35--55 MeV per nucleon in 10 solar flares occurring in the period 1974--1979. This ratio is in agreement with solar system compilations based on terrestrial and meteoritic samples. This result indicates that the observed difference of a factor of approx.2 in the ratio /sup 22/Ne//sup 20/Ne between solar flare measurements ( = 0.13 which agrees with the ratio for neon-A in meteorites) and measurements in the solar wind ( = 0.074) is not likely to be due to mass biasing effects in normal solar flares.

• Research Organization: Enrico Fermi Institute, University of Chicago
• OSTI ID: 6316294
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 245:1; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ALKALINE EARTH ISOTOPES
EVEN-EVEN NUCLEI
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 24
MAGNESIUM 26
MAGNESIUM ISOTOPES
NEON 20
NEON 22
NEON ISOTOPES
NUCLEI
SOLAR ACTIVITY
SOLAR FLARES
SOLAR WIND
STABLE ISOTOPES