Multipole Giant Resonances in Highly Excited Nuclei

Xia Keding; Cai Yanhuang

Chinese Physics C> 1989, Vol. 13> Issue(S1) : 79-86

Multipole Giant Resonances in Highly Excited Nuclei

Xia Keding ,
Cai Yanhuang

Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai

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Abstract：
The isoscalar giant surface resonance and giant dipole resonance of highly excited nuclei are discussed. Excitation energies of the giant modes in ²⁰⁸Pb are calculated in a simplified model, using the concept of energy weighted sum rule (EWSR), and the extended Thomas-Fermi approximation at finite temperature is employed to describe the finite temperature equilibrium state. It shows that EWSR and the energy of the resonance depend weakly on the temperature of the system. The weak dependence is analyzed.

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Xia Keding and Cai Yanhuang. Multipole Giant Resonances in Highly Excited Nuclei[J]. Chinese Physics C, 1989, 13(S1): 79-86.

Xia Keding and Cai Yanhuang. Multipole Giant Resonances in Highly Excited Nuclei[J]. Chinese Physics C, 1989, 13(S1): 79-86. shu

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Received: 1987-04-15

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沈阳化工大学材料科学与工程学院沈阳 110142

Multipole Giant Resonances in Highly Excited Nuclei

Xia Keding
Cai Yanhuang

Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai

Received Date: 1987-04-15

Abstract: The isoscalar giant surface resonance and giant dipole resonance of highly excited nuclei are discussed. Excitation energies of the giant modes in ²⁰⁸Pb are calculated in a simplified model, using the concept of energy weighted sum rule (EWSR), and the extended Thomas-Fermi approximation at finite temperature is employed to describe the finite temperature equilibrium state. It shows that EWSR and the energy of the resonance depend weakly on the temperature of the system. The weak dependence is analyzed.