Pu-240 /Pu-239 and Pu-242/ Pu-239 atom ratios of Japanese monthly atmospheric deposition samples during 1963-1966

Ohtsuka, Y; Aoyama, M; Takaku, Y; Igarashi, Y; Hattori, M; Hirose, K; Hisamatsu, S

Ohtsuka, Y (reprint author), Inst Environm Sci, Dept Radioecol, Aomori 0393212, Japan.

SCIENTIFIC REPORTS, 2019; 9 ():

Abstract

Global fallout plutonium isotopic ratios from the 1960s are important for the use of Pu as environmental tracers. We measured the( 240)Pu/ Pu-239 and ......

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