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Geochemical Journal
Geochemical Journal An open access journal for geochemistry
Published for geochemistry community from Geochemical Society of Japan.

Phosphorus-32 induced by atmospheric cosmic rays in laboratory chemicals

Hisao Mabuchi, Reisuke Gensho, Yukio Wada, Hiroshi Hamaguchi
Geochemical Journal, Vol. 4, No. 3, P. 105-110, 1971


The production rates of 32P in rhombic sulfur were measured at various altitudes from sea level up to the top of Mt. Fuji. The production rate decreases exponentially with increasing atmospheric depth and the dependence indicates that neutron reaction is predominant in the 32P production. From an underground experiment, the contribution of muons to the production of 32P was estimated and the result was compared with relevant data.

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