Antimagnetic rotation in the shape-phase transition point nucleus 82Kr

被引：2

作者：

Rajbanshi, S. ^{[1
]}

Manna, G. ^{[2
]}

Palit, R. ^{[3
]}

Bisoi, Abhijit ^{[4
]}

Rahaman, Habibur ^{[4
]}

Ali, Sajad ^{[5
]}

Babra, F. S. ^{[3
]}

Banik, R. ^{[6
]}

Bhattacharya, S. ^{[7
]}

Bhattacharyya, S. ^{[8
]}

Dey, P.

Laskar, Md. S. R. ^{[8
]}

Mukherjee, G. ^{[8
,9
]}

Nandi, S. ^{[8
,10
]}

Pai, H.

Santra, Rajkumar ^{[8
]}

Trivedi, T. ^{[11
]}

机构：

[1] Presidency Univ, Kolkata 700073, India

[2] Mugberia Gangadhar Mahavidyalaya, Purba Medinipur 721425, India

[3] Tata Inst Fundamental Res, Mumbai 400005, India

[4] Indian Inst Engn Sci & Technol, Howrah 711103, India

[5] Govt Gen Degree Coll Pedong, Kalimpong 734311, India

[6] Inst Engn & Management, Saltlake Sect V, Kolkata 700091, India

[7] Amity Univ, Noida 201301, India

[8] Variable Energy Cyclotron Ctr, Kolkata 700064, India

[9] Homi Bhabha Natl Inst, Training Sch Complex, Anushakti Nagar, Mumbai 400094, India

[10] Horia Hulubei Natl Inst R&D Phys & Nucl Engn, Extreme Light Infrastruct Nucl Phys, Bucharest 077125, Romania

[11] Univ Allahabad, Prayagraj 211002, India

来源：

PHYSICAL REVIEW C | 2024年 / 109卷 / 06期

关键词：

HIGH-SPIN STATES; IN-BEAM; COMPTON POLARIMETER; MAGNETIC ROTATION; DIPOLE BANDS; LIFETIMES; EXCITATIONS; SYMMETRY; RATIOS; E(5);

D O I：

10.1103/PhysRevC.109.064308

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 quadrupole transition strength B ( E 2) deduced from the measured level lifetimes using the Doppler shift attenuation method with the help of the Indian National Gamma Array, decreases with increasing spin for the band of interest in 82 Kr. In addition, the ratio of the dynamic moment of inertia with the B ( E 2) value increases along the band. Large basis shell -model calculations have been performed to understand the microscopic origin of the band of interest. The experimental results are reproduced well by the numerical calculations within the framework of a semiclassical geometric model, which conclusively establish the antimagnetic rotation in the shape -phase transition point nucleus 82 Kr in the A approximate to 80 mass region. Present investigation represents the first conclusive evidence of an antimagnetic rotational band based on the valence protons and neutrons in the 1 g 9 / 2 orbitals in an atomic nucleus.

引用

页数：10

共 39 条

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