Evidence of antimagnetic rotation in odd-A 105Cd

被引：65

作者：

Choudhury, Deepika ^{[1
]}

Jain, A. K. ^{[1
]}

Patial, M. ^{[1
]}

Gupta, N. ^{[1
]}

Arumugam, P. ^{[1
]}

Dhal, A. ^{[2
,6
]}

Sinha, R. K. ^{[2
]}

Chaturvedi, L. ^{[3
]}

Joshi, P. K. ^{[4
]}

Trivedi, T. ^{[4
]}

Palit, R. ^{[4
]}

Kumar, S. ^{[5
]}

Garg, R. ^{[5
]}

Mandal, S. ^{[5
]}

Negi, D. ^{[6
]}

Mohanto, G. ^{[6
]}

Muralithar, S. ^{[6
]}

Singh, R. P. ^{[6
]}

Madhavan, N. ^{[6
]}

Bhowmik, R. K. ^{[6
]}

Pancholi, S. C. ^{[6
]}

机构：

[1] Indian Inst Technol, Dept Phys, Roorkee 247667, Uttar Pradesh, India

[2] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[3] Guru Ghasidas Univ, Dept Pure & Appl Phys, Bilaspur 495009, India

[4] Tata Inst Fundamental Res, Dept Nucl & Atom Phys, Bombay 400085, Maharashtra, India

[5] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

[6] Inter Univ Accelerator Ctr, New Delhi 110067, India

来源：

PHYSICAL REVIEW C | 2010年 / 82卷 / 06期

关键词：

SHEARS MECHANISM; BAND;

D O I：

10.1103/PhysRevC.82.061308

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：

The lifetimes of the levels above spin 23/2(-) in the negative-parity yrast band of Cd-105 have been measured using the Doppler shift attenuation method. The obtained B(E2) values are small and show a decrease with an increase in spin. This establishes, for the first time, antimagnetic rotation (AMR) in an odd-A nucleus. An excellent agreement between the theoretical (semiclassical model) and experimental results along with a large F-(2)/B(E2) ratio for the states strongly suggests that the structure of the levels beyond spin 23/2(-) has the character of a twin-shears type AMR band resulting from the coupling of a pair of g(9/2) proton holes with aligned h(11/2) and (g(7/2))(2) neutron particles, along with a small contribution from the core rotation.

引用

页数：5

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