Isotope production in meteorites and cosmic ray variations

Bhandari, N. (1983) Isotope production in meteorites and cosmic ray variations Proceedings from the 18th International Cosmic Ray Conference, 2 . pp. 354-356.

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The depth profiles of cosmic ray tracks and radiisotopes such as 53Mn, 26Al, 60Co etc measured in some chondrites indicate that the isotope production rates axe a sensitive function of the size of the meteoroid and depth within it. Based on these data the source functions of several stable and radioative isotopes in meteoroids having radii in the range of about 6 to 100 cm are computed. The production rates of 21Ne and 22Ne enable us to calculate the exposure ages correctly and identify meteorites with complex exposure history. The radionuclide data in meteorites are examined in view of these production estimates. Except for the solar cycle modulation in galactic cosmic ray fluxes which is probably different in different regions of the he1iosphere, there are no definite indications of any significant long term time variations in GCR fluxes.

Item Type:Article
Source:Copyright of this article belongs to Proceedings of 18th International Conference on Cosmic Ray.
ID Code:89267
Deposited On:26 Apr 2012 06:28
Last Modified:19 May 2016 03:50

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