Elsevier

Nuclear Physics A

Volume 375, Issue 2, 8 February 1982, Pages 187-216
Nuclear Physics A

Investigation of polar emission in 252Cf and 235U + nth fission

https://doi.org/10.1016/0375-9474(82)90409-2Get rights and content

Abstract

The energy distributions and relative intensities of protons, deuterons, tritons and α-particles emitted along the fission axis during spontaneous fission of 252Cf were measured simultaneously with both fission fragment energies. The absolute intensity of particles, the mass distribution of fragments, the total kinetic energy and total excitation energy of both fragments were subsequently deduced from the experimental data. Statistical model calculations based on a hypothesis that the polar particles are evaporated from fission fragments have been performed for 252Cf and 236U fission. Although some experimental results agree remarkably well with the evaporation hypothesis, the considered model cannot describe many features of the polar emission phenomenon.

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    This work was carried out under the International Atomic Energy Agency contract No 1126/RB.

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