Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981avest..15...55u&link_type=abstract
(Astronomicheskii Vestnik, vol. 15, Jan.-Mar. 1981, p. 55-62.) Solar System Research, vol. 15, no. 1, July 1981, p. 43-49. Tran
Astronomy and Astrophysics
Astronomy
Chondrites, Cosmic Rays, Galactic Radiation, Meteoritic Composition, Radioactive Isotopes, Solar Orbits, Aluminum 26, Cobalt 60, Gamma Ray Astronomy, Sodium 22, Spatial Distribution
Scientific paper
The radioactivity of the cosmogenic isotopes Sc-46, Mn-54, Na-22, and Co-60 in the recently fallen Dhajala chondrite has been measured by the low-background gamma spectrometry method. Theoretical calculations of the depth distribution of these cosmogenic radioisotopes were also performed for chondrites of various sizes with chemical composition and time of fall similar to those of the Dhajala chondrite. In view of the high inclination of the orbit of the Dhajala chondrite, the observed excess in the experimental values of the radioactivity of Mn-54, Na-22, and Al-26 over those calculated permits concluding that significant transverse gradients of galactic cosmic rays existed in the solar system during the anomalous period of development of the solar cycle in 1972-1975.
Gorin V. D.
Lavrukhina A. K.
Ustinova G. K.
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