PHOTOFISSION OF 232Th NEAR THRESHOLD
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چکیده
Measurements are presented of the photofission cross section and the mean number fi of neutrons per fission for 232Th made using bremsstrahlung from the Harwell electron linear accelerator HELIOS and a high efficiency neutron detector to record neutron multiplicity distributions. The cross section is interpreted in terms of a fission barrier with shallow wells in two separate outer barriers. Interesting structure is observed in fi as a function of photon energy. E NUCLEAR REACTIONS ‘?B (y F) E = 5.5-7 MeV, measured photon induced fission , , C(E); deduced average neutron number VSE. 232Th deduced fission characteristics.
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تاریخ انتشار 2002