高激发能的集体态和单粒子态

Acta Physica Hungarica Pub Date : 2001-03-01 DOI:10.1556/APH.13.2001.1-3.4

A. Berg, H. Akimune, I. Daito, H. Fujimura, M. Fujiwara, Y. Fujita, M. Harakeh, F. Ihara, T. Inomata, K. Ishibashi, J. Jänecke, N. Kalantar-Nayestanaki, H. Laurent, I. Lhenry, H. V. D. Molen, T. O'Donnell, V. Rodin, A. Tamii, H. Toyokawa, M. H. Urin, H. Yoshida, M. Yosoi

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引用次数: 0

摘要

在Eα=180 MeV时，用90Zr(α， t)反应填充的91Nb高能级态的质子发射衰变研究了高能级单粒子态的衰减。除了衰减到90Zr基态外，还观察到低能级(2+/5−和3−)声子态的半直接衰减，证实了其他实验的结论，即声子态在单粒子态的阻尼过程中起重要作用。此外，在相同的反应中，我们还研究了激发能约为10-12 MeV的91Zr的等压模拟态在91Nb中的分布和衰减。

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Collective and single-particle states at high excitation energy

Damping of high-lying single-particle states was investigated by the study of decay by proton emission from high-lying states in 91Nb, populated by the 90Zr(α, t) reaction at Eα=180 MeV. In addition to decay to the ground state of 90Zr, semi-direct decay was observed to the low-lying (2+/5− and 3−) phonon states, confirming the conclusion from other experiments that phonon states play an important role in the damping process of the single-particle states. Furthermore, the population and decay of isobaric analogue states of 91Zr, which are located at an excitation energy of about 10–12 MeV in 91Nb, has been studied in the same reaction.

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Acta Physica Hungarica

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