The formation of a spontaneously fissioning isomer in the capture of neutrons by Am

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“…A spontaneously fissioning isomer with a half life of = 13 msec, formed in the reaction AmU3 (n,2n) Am242, was studied by Linev et at. (51), who used 16 phosphate glass detectors mounted on a rapidly rotating disk. A modu lated beam was employed to separate the spontaneous fission effect from the neutron-induced fission of Am2 I atomic per cent Pb were bombarded with high doses of ISO-MeV oxygen ions (52,53), 414-MeV argon ions, and 3-GeV protons (11) .…”