Study of the Pallasite Radiation History by Track Analysis
This work was performed within the OLYMPIA experiment on the study of tracks of heavy and superheavy cosmic ray nuclei in olivine crystals from Marjalahti and Eagle Station pallasites. Depth distributions of the track formation rate for heavy cosmic ray nuclei in olivine crystals from pallasites of different pre-atmospheric sizes were obtained. The dependences obtained were used to analyze the data on the track density in olivine crystals from the Marjalahti pallasite. In three crystals, the track distribution with a high density gradient was detected, which indicates a complicated radiation history of the meteorite.
Keywordscosmic rays pallasites olivine crystals heavy nuclei tracks cosmic radiation exposure (CRE)
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This study was supported by the Presidiums of the Russian Academy of Sciences, program no. 28.
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