Deformation effects in low-momentum distributions of heavy nuclei
| Autor: | Nesterenko, Vo, Likhachev, Vp, Reinhard, Pg, Mesa, J., Kleinig, W., Arruda-Neto, Jdt, Airton Deppman |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | ResearcherID |
| DOI: | 10.48550/arxiv.nucl-th/0301046 |
| Popis: | Momentum distributions (MD) of deep hole proton states in $^{238}$U are studied paying particular attention to the influence of deformation. Two essentially different mean-field models, Woods-Saxon (WS) and Skyrme-Hartree-Fock with the SkM$^*$ force, are used. Noticeable deviations between the WS and SkM$^*$ results are found. They are mainly due to the difference in effective nucleon mass. In particular, SkM$^*$ gives much weaker deformation effects at low momenta than WS. It is shown that, in spite of the deformation mixing, MD at low momenta can serve for identification of $K^{\pi}=1/2^+$ hole states originating from $s_{1/2}$ spherical sub-shells. Moreover, following the WS calculations, the deformation results in additional $K^{\pi}=1/2^+$ states with strong $l=0$ contributions. A possibility to probe such states in knock-out experiments is discussed. Comment: 9 pages, 3 figures. In the replaced version the figures were optimized without changing their content |
| Databáze: | OpenAIRE |
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