Single-particle and collective excitations in 63Ni

被引：17

作者：

Albers, M. ^{[1
]}

Zhu, S. ^{[1
]}

Janssens, R. V. F. ^{[1
]}

Gellanki, J. ^{[2
]}

Ragnarsson, I. ^{[3
]}

Alcorta, M. ^{[1
]}

Baugher, T. ^{[4
,5
]}

Bertone, P. F. ^{[1
]}

Carpenter, M. P. ^{[1
]}

Chiara, C. J. ^{[1
,6
]}

Chowdhury, P. ^{[7
]}

Deacon, A. N. ^{[8
]}

Gade, A. ^{[4
,5
]}

DiGiovine, B. ^{[1
]}

Hoffman, C. R. ^{[1
]}

Kondev, F. G. ^{[9
]}

Lauritsen, T. ^{[1
]}

Lister, C. J. ^{[1
]}

McCutchan, E. A. ^{[1
]}

Moerland, D. S. ^{[1
,10
]}

Nair, C. ^{[1
]}

Rogers, A. M. ^{[1
]}

Seweryniak, D. ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[2] Lund Univ, Dept Phys, S-22100 Lund, Sweden

[3] Lund Univ, Div Math Phys, LTH, S-22100 Lund, Sweden

[4] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[5] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[6] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA

[7] Univ Massachusetts, Dept Phys, Lowell, MA 01854 USA

[8] Univ Manchester, Sch Phys & Astron, Schuster Lab, Manchester M13 9PL, Lancs, England

[9] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA

[10] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

来源：

PHYSICAL REVIEW C | 2013年 / 88卷 / 05期

基金：

英国科学技术设施理事会; 美国国家科学基金会; 瑞典研究理事会;

关键词：

ROTATIONAL BANDS; SUPERDEFORMED BAND; NUCLEUS; DECAY; ISOTOPES; NI-56; CA-48; SPIN; N=40; N=32;

D O I：

10.1103/PhysRevC.88.054314

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A study of excited states in Ni-63 up to an excitation energy of 28 MeV and a probable spin of 57/2 was carried out with the Mg-26(Ca-48,2 alpha 3n gamma)Ni-63 reaction at beam energies between 275 and 320 MeV. Three collective bands, built upon states of single-particle character, were identified. For two of the three bands, the transition quadrupole moments were extracted, herewith quantifying the deformation at high spin. The results have been compared with shell-model and cranked Nilsson-Strutinsky calculations. Despite the Z = 28 shell closure and the approach to the purported N = 40 subshell, the Ni-63 isotope is able to sustain collective excitations at moderate and high spin.

引用

页数：13

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