TITLE

Analysis of Fusion–Fission Process with Neutron Evaporation in Superheavy Mass Region

AUTHOR(S)
Aritomo, Y.; Ohta, M.
PUB. DATE
June 2003
SOURCE
Physics of Atomic Nuclei;Jun2003, Vol. 66 Issue 6, p1105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The fusion-fission process for the synthesis of superheavy elements is discussed on the basis of fluctuation-dissipation dynamics. Recently, experiments at Dubna on fission of superheavy nuclei were carried out, and the mass and total kinetic energy distributions of fission fragments were measured. The fusion-fission cross section was derived from the experiments. We analyze the data using a three-dimensional Langevin calculation. We present a clear understanding of the competition between the fusion and the quasifission. We emphasize that a one- or two-dimensional model of Langevin calculation is not sufficient to estimate the fusion cross section in the superheavy mass region. Also, experiments on the emission of neutrons in correlation with fission fragments were conducted. It is useful to investigate the fusion-fission dynamics. We take into account the neutron emission with a Langevin calculation and compare it with experimental data. Finally, we discuss the evaporation residue cross section for superheavy elements.
ACCESSION #
10150136

 

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