Enhanced collectivity in 74Ni

被引：32

作者：

Aoi, N. ^{[1
]}

Kanno, S. ^{[1
,2
]}

Takeuchi, S. ^{[1
]}

Suzuki, H. ^{[4
]}

Bazin, D. ^{[3
]}

Bowen, M. D. ^{[3
]}

Campbell, C. M. ^{[3
]}

Cook, J. M. ^{[3
]}

Dinca, D. -C. ^{[3
]}

Gade, A. ^{[3
]}

Glasmacher, T. ^{[3
]}

Iwasaki, H. ^{[3
,4
]}

Kubo, T. ^{[1
]}

Kurita, K. ^{[2
]}

Motobayashi, T. ^{[1
]}

Mueller, W. F. ^{[3
]}

Nakamura, T. ^{[5
]}

Sakurai, H. ^{[1
,4
]}

Takashina, M. ^{[6
,7
]}

Terry, J. R. ^{[3
]}

Yoneda, K. ^{[1
,3
]}

Zwahlen, H. ^{[3
]}

机构：

[1] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan

[2] Rikkyo Univ, Dept Phys, Toshima Ku, Tokyo 1718501, Japan

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

[4] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[5] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

[6] Osaka Univ, Grad Sch Med, Suita, Osaka 5650871, Japan

[7] Osaka Univ, Nucl Phys Res Ctr, Osaka 5670047, Japan

来源：

PHYSICS LETTERS B | 2010年 / 692卷 / 05期

基金：

日本学术振兴会; 美国国家科学基金会;

关键词：

Proton inelastic scattering; Quadrupole collectivity; Ni-74; PROTON INELASTIC-SCATTERING; N=8 SHELL CLOSURE; BETA-DECAY; EXCITED-STATE; BE-12; ISOTOPES; DEFORMATION; DESCENDANTS; KINEMATICS; DETECTOR;

D O I：

10.1016/j.physletb.2010.07.052

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The neutron-rich nucleus Ni-74 was studied with inverse-kinematics inelastic proton scattering using a Ni-74 radioactive beam incident on a liquid hydrogen target at a center-of-mass energy of 80 MeV. From the measured de-excitation gamma rays, the population of the first 2(+) state was quantified. The angle-integrated excitation cross section was determined to be 14(4) mb. A deformation length of delta = 1.04(16) fm was extracted in comparison with distorted wave theory, which suggests that the enhancement of collectivity established for Ni-70 continues up to Ni-74. A comparison with results of shell model and quasi-particle random phase approximation calculations indicates that the magic character of Z = 28 or N = 50 is weakened in Ni-74. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：302 / 306

页数：5

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