MULTIPOLE GLANT RESONANCES IN HIGHLY EXCITED NUCLEI

XIA Ke-Ding; CAI Yan-Huang

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2024年10月30日

Chinese Physics C> 1989, Vol. 13> Issue(1) : 56-61

MULTIPOLE GLANT RESONANCES IN HIGHLY EXCITED NUCLEI

XIA Ke-Ding ^, ,
CAI Yan-Huang

Institute of Nuclear Research,Academia Sinica,Shanghai

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Abstract：
The isoscalar giant surface resonance and giant dipole resonance in 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 the finite temperature is employed to describe the finite temperature equilibrium state.It is shown that EWSR and the enrgy of the resonance depend only weakly on temperature in the system.This weak dependence is analysed.

References

[1]

J. D. Newton et al., Phys. Rev. Lett., 46(1981), 1383.W. Hennerici et al., Nucl. Phys, A396(1983), 3292.A. M. Sandorfi et al., Phys. Lett., 130B(1983), 19.[2] H. M. Sommermann, Annals Phys., 151(1983), 163.[3] O. Civitarese, R. A. Broglia and C. H. Dasso, Ann. Phys., 156(1984), 142.H. Sagawa and G. F. Bertsch, Phys. Lett., 146B(1984). 138.[4] M. Barranco and A. Polls. Nucl. Phys., A444(1985), 445.[5] M. Di Toro, Proceedings oj The Winzer College or Fundatizcnza Nuclear Physics, eds. K . Dietrich, M. Di Toro and H. J. Mang (World Scientific, 1985) Vol. 1, p.451.[6] 蔡延磺，夏克定，热核的统计性质和核物质的液气相变，待发表.[7] A. Bohr and B. R. Mottelson, Nuclear Structure, Vol. 2, Benjamin, New York, 1975.[8] M. Brack, C. Guet and H. B. Hakansson, Phys. Rep 123(1985), 275.[9] M. Barranco and J. Treiner, Nucl. Phys., A351(1981), 269.M. Barranco and J. R. Buchler, Phys. Rev., C24(1981), 1191.[10] A. Bohr and B. R. Mottrlson, Nuclcar Structure, Vol. 1, Benjamin. New York. 1969.[11] J. Bartel, M. Brack, C. Guet and H. B. Hakansson, Phys. Lett., 139B(1984). 1.

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XIA Ke-Ding and CAI Yan-Huang. MULTIPOLE GLANT RESONANCES IN HIGHLY EXCITED NUCLEI[J]. Chinese Physics C, 1989, 13(1): 56-61.

XIA Ke-Ding and CAI Yan-Huang. MULTIPOLE GLANT RESONANCES IN HIGHLY EXCITED NUCLEI[J]. Chinese Physics C, 1989, 13(1): 56-61. shu

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Received: 1900-01-01
Revised: 1900-01-01

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

MULTIPOLE GLANT RESONANCES IN HIGHLY EXCITED NUCLEI

XIA Ke-Ding ^,
CAI Yan-Huang

Corresponding author: XIA Ke-Ding,

Institute of Nuclear Research,Academia Sinica,Shanghai

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1989-01-05

Abstract: The isoscalar giant surface resonance and giant dipole resonance in 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 the finite temperature is employed to describe the finite temperature equilibrium state.It is shown that EWSR and the enrgy of the resonance depend only weakly on temperature in the system.This weak dependence is analysed.