Elsevier

Nuclear Physics A

Volume 458, Issue 2, 6 October 1986, Pages 217-224
Nuclear Physics A

Photofission of 232Th near threshold

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Abstract

Measurements are presented of the photofission cross section and the mean number ν 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 ν as a function of photon energy.

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    Work described in this paper was undertaken as part of the Underlying Research Programme of the UKAEA.

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