Influence of angular momentum on evaporation residue cross section as a probe of nuclear dissipation

YE Wei; WU Feng

doi:10.1088/1674-1137/32/6/004

Chinese Physics C> 2008, Vol. 32> Issue(6) : 433-436 DOI: 10.1088/1674-1137/32/6/004

Influence of angular momentum on evaporation residue cross section as a probe of nuclear dissipation

YE Wei ^, ,
WU Feng

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Abstract：
By calculating the excess of the evaporation residue cross sections of the ²⁰⁰Pb
nucleus over that predicted by the standard statistical model as a function of nuclear viscosity coefficient using a Langevin equation combined with a statistical decay model, it is found that high angular momentum not only amplifies the dissipation effects on the excess of the evaporation residue cross sections, but also considerably increases the sensitivity of this excess to the
nuclear viscosity coefficient. These results suggest that on the experimental side, to accurately obtain the information of nuclear dissipation inside the saddle point by measuring the evaporation residue cross section, it had better populate those compound systems with high spins.

References

[1]

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YE Wei and WU Feng. Influence of angular momentum on evaporation residue cross section as a probe of nuclear dissipation[J]. Chinese Physics C, 2008, 32(6): 433-436. doi: 10.1088/1674-1137/32/6/004

YE Wei and WU Feng. Influence of angular momentum on evaporation residue cross section as a probe of nuclear dissipation[J]. Chinese Physics C, 2008, 32(6): 433-436. doi: 10.1088/1674-1137/32/6/004 shu

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Received: 2007-08-20
Revised: 2007-09-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Influence of angular momentum on evaporation residue cross section as a probe of nuclear dissipation

Corresponding author: YE Wei,

Received Date: 2007-08-20

Accepted Date: 2007-09-01

Available Online: 2008-06-05

Abstract:

By calculating the excess of the evaporation residue cross sections of the ²⁰⁰Pb
nucleus over that predicted by the standard statistical model as a function of nuclear viscosity coefficient using a Langevin equation combined with a statistical decay model, it is found that high angular momentum not only amplifies the dissipation effects on the excess of the evaporation residue cross sections, but also considerably increases the sensitivity of this excess to the
nuclear viscosity coefficient. These results suggest that on the experimental side, to accurately obtain the information of nuclear dissipation inside the saddle point by measuring the evaporation residue cross section, it had better populate those compound systems with high spins.

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Influence of angular momentum on evaporation residue cross section as a probe of nuclear dissipation

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