VISCOSITY COEFFICENT WITH THE PAIRING INTERACTION

FENG REN-FA; ZHANG XI-ZHEN; WU XI-ZHEN; ZHUO YI-ZHONG

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 1982, Vol. 6> Issue(4) : 448-452

VISCOSITY COEFFICENT WITH THE PAIRING INTERACTION

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Abstract：
In the study of the dynamic process (for example, the deep inelastic scatteringof heavy ion, the nuclear fission), the viscosity which describes the coupling between theintrinsic degrees of freedom and the collective one is a basic quantity. In this paper,under BCS approximation we derive microscopic expression of viscosity coefficientwith pairing interaction by means of the linear response theory. Taking the fissionprocess of ²³⁶U as an example, we discuss the effect of pairing interaction on theviscosity coefficient. The results show that the pairing interaction must be taken intoaccount at the lower temperature and can be neglected at high temperature region.

References

[1]

H. Hofmann and P. J. Siemene, Nucl,. Phys., A257(1976), 165.[2] H. Hofmann et aL, Nucl. Phys., A288(1977). 152.[3] 冯仁发等,高能物理与核物理,5(1981) 346.[4] A. Bohr, Nuclear structure, Vol, 2(1975), 648.[5] B. I. 8ato, A. Iwamoto et al., JAERI-MEMO, 7596(1978).[6] 冯仁发,矣锡真等,原子能科学技术,8(1981), 703,[7] L. G. Moretto, Nucl. Phys., A185-186 (1972), 145.

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FENG REN-FA, ZHANG XI-ZHEN, WU XI-ZHEN and ZHUO YI-ZHONG. VISCOSITY COEFFICENT WITH THE PAIRING INTERACTION[J]. Chinese Physics C, 1982, 6(4): 448-452.

FENG REN-FA, ZHANG XI-ZHEN, WU XI-ZHEN and ZHUO YI-ZHONG. VISCOSITY COEFFICENT WITH THE PAIRING INTERACTION[J]. Chinese Physics C, 1982, 6(4): 448-452. shu

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Received: 1980-12-24
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

VISCOSITY COEFFICENT WITH THE PAIRING INTERACTION

Received Date: 1980-12-24
Accepted Date: 1900-01-01
Available Online: 1982-08-05

Abstract: In the study of the dynamic process (for example, the deep inelastic scatteringof heavy ion, the nuclear fission), the viscosity which describes the coupling between theintrinsic degrees of freedom and the collective one is a basic quantity. In this paper,under BCS approximation we derive microscopic expression of viscosity coefficientwith pairing interaction by means of the linear response theory. Taking the fissionprocess of ²³⁶U as an example, we discuss the effect of pairing interaction on theviscosity coefficient. The results show that the pairing interaction must be taken intoaccount at the lower temperature and can be neglected at high temperature region.