Open AccessVariations of cosmogenic radionuclide production rates in chondrites of known orbits
Author(s) -
Г. К. Устинова,
V. A. Alexeev
Publication year - 2019
Publication title -
doklady akademii nauk. rossijskaâ akademiâ nauk
Language(s) - English
Resource type - Journals
ISSN - 0869-5652
DOI - 10.31857/s0869-5652485133-37
Subject(s) - heliosphere , chondrite , cosmic ray , physics , solar wind , radionuclide , astrophysics , astrobiology , homogeneous , solar system , astronomy , meteorite , plasma , nuclear physics , thermodynamics
The results of multiyear investigations of cosmogenic radionuclide production rates along the orbits of 42 chondrites, fallen successively to the Earth in 1959-2016 are presented. They constitute a long set of homogeneous data, statistical smoothing of which demonstrates some main regularities of distribution and variation of the galactic cosmic rays (GCR) with energy > 100 MeV in the internal ( 100 MeV), averaged over a 1 My in the internal heliosphere, testifying to permanent development and dissipation of a layer of the solar wind magnetic irregularities, which efficiently modulates cosmic radiation. It suggests a constancy of magneto-hydrodynamic environment in the Solar system at least for the last million years.