Acta Physica Polonica B

Vol. 29, No. 1--2, January--February 1998, page 451


Analysis of Pre-scission Neutron Multiplicities in Terms of the Statistical Model with Kramers Dissipative Fission

K. Siwek-Wilczynska, J. Krzyczkowski, J. Wilczynski, R.H. Siemssen, H.W. Wilschut

Pre-scission neutron multiplicities in fusion-fission reactions, reported by Hinde et al., have been analyzed in terms of the statistical model assuming a possible hindrance of the compound-nucleus fission width by the Kramers factor which depends on nuclear dissipation. Contrary to earlier results reported by Hofman, Back and Paul on an analysis of the GDR \gamma-decay, the nuclear dissipation deduced in the present analysis does not show a clear dependence on the temperature of the compound nucleus. On average, the deduced values of the nuclear dissipation are consistent with the one-body dissipation estimate.

PACS numbers: 24.75.+i, 25.70.Jj



 
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