Effective nucleon mass in deformed nuclei

P. Donati, T. Døssing, Y. R. Shimizu, S. Mizutori, P. F. Bortignon, R. A. Broglia

研究成果: Contribution to journalArticle査読

12 被引用数 (Scopus)

抄録

The coupling of vibrations to nucleons moving in levels lying close to the Fermi energy of deformed rotating nuclei is found to lead to a number of effects: (i) shifts of the single-particle levels of the order of 0.5 MeV towards the Fermi energy and thus to an increase of the level density, (ii) single-particle state depopulation of the order of 30 %, and thus spectroscopic factors ∼ 0.7, etc. These effects, which we have calculated for 168Yb, can be expressed in terms of an effective mass, the so-called ? mass (mω), which is ≈40% larger than the bare nucleon mass in the ground state. It is found that mω displays a strong dependence with rotational frequency, eventually approaching the bare mass for hωrot≈ 0.5-0.6 MeV .

本文言語英語
ページ(範囲)4317-4320
ページ数4
ジャーナルPhysical review letters
84
19
DOI
出版ステータス出版済み - 2000

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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