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Shell structure of even-even nickel isotopes containing twenty to forty neutrons

中性子数20から40に渡るニッケル偶偶核の殻構造

Bespalova, O. V.*; Boboshin, I. N.*; Varlamov, V. V.*; Ermakova, T. A.*; Ishkhanov, B. S.*; Klimochkina, A. A.*; Komarov, S. Yu.*; 小浦 寛之  ; Romanovsky, E. A.*; Spasskaya, T. I.*

Bespalova, O. V.*; Boboshin, I. N.*; Varlamov, V. V.*; Ermakova, T. A.*; Ishkhanov, B. S.*; Klimochkina, A. A.*; Komarov, S. Yu.*; Koura, Hiroyuki; Romanovsky, E. A.*; Spasskaya, T. I.*

中性子数が20から40に渡るニッケル偶偶核の殻構造を解析し、その結果を示す。大域的模型である小浦-山田ポテンシャル(2000年作成)及び核種ごとにパラメータを定める分散光学ポテンシャルを用いて陽子及び中性子の単一粒子エネルギーを計算し、直接実験値及び間接実験評価値との詳細な比較がなされた。小浦-山田ポテンシャルはニッケル同位体の単一粒子準位の系統性をよく予言・再現し、この領域の準閉殻構造の性質を解析するのにも有効であることがわかった。

Shell parameters of even-even nickel isotopes involving twenty to forty neutrons are analyzed, and the results of this analysis are presented. A detailed comparison of the results obtained by calculating, on the basis of the mean-field model with the Koura-Yamada potential and the dispersive optical potential, single-particle energies of proton and neutron subshells with experimental data on the isotopes $$^{56,58,60,62,64,68}$$Ni and with evaluated data on the neutron-deficient isotopes $$^{48,50,52,54}$$Ni is performed. The Koura-Yamada potential predicts correctly special features in dependence of single-particle energy and are useful in evaluating sub-shell energies on unstable nuclei.

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パーセンタイル:58.22

分野:Physics, Nuclear

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