Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8197489 | Physics Letters B | 2007 | 4 Pages |
Abstract
The influence of isospin on pre-scission giant dipole resonance (GDR) γ decay for nuclei 194Pb, 200Pb, 206Pb and 200Os is explored via a Langevin equation coupled with a statistical model. It is demonstrated that with increasing the isospin of these fissioning nuclei the sensitivity of the emitted γ multiplicity to the nuclear viscosity coefficient is decreased significantly. For 200Os nucleus, this γ-ray emission is no longer sensitive to the magnitude of the viscosity coefficient. In addition, isospin effect on the γ rays as a probe of nuclear dissipation is reduced with increasing angular momentum. These results suggest that to obtain a more accurate information of the viscosity coefficient by the measurement of pre-scission GDR γ-ray multiplicity it had better choose those compound systems with small isospin and low spin.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
W. Ye, F. Wu, H.W. Yang,