Experimental investigation of high-spin states in 90Zr

被引：16

作者：

Dey, P. ^{[1
]}

Negi, D. ^{[1
]}

Palit, R. ^{[1
]}

Srivastava, P. C. ^{[2
]}

Laskar, Md S. R. ^{[1
]}

Das, B. ^{[1
]}

Babra, F. S. ^{[1
]}

Bhattacharya, S. ^{[3
]}

Das, Biswajit ^{[1
]}

Devi, K. Rojeeta ^{[4
]}

Gala, R. ^{[1
]}

Garg, U. ^{[5
]}

Ghugre, S. S. ^{[6
]}

Ideguchi, E. ^{[7
]}

Kumar, S. ^{[4
]}

Kundu, A. ^{[1
]}

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

Muralithar, S. ^{[10
]}

Nag, S. ^{[11
]}

Nandi, S. ^{[8
,9
]}

Neelam ^{[4
]}

Raja, M. Kumar ^{[12
]}

Raut, R. ^{[6
]}

Santra, R. ^{[1
]}

Sharma, A. ^{[13
]}

Sihotra, S. ^{[14
]}

Singh, A. K. ^{[15
]}

Singh, R. P. ^{[10
]}

Trivedi, T. ^{[3
]}

机构：

[1] Tata Inst Fundamental Res, Dept Nucl & Atom Phys, Mumbai 400005, Maharashtra, India

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

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

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

[5] Univ Notre Dame, Phys Dept, Notre Dame, IN 46556 USA

[6] UGC DAE CSR Kolkata Ctr, Kolkata 700098, India

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

[8] Variable Energy Cyclotron Ctr, 1-AF Bidhan Nagar, Kolkata 700064, India

[9] Homi Bhabha Natl Inst, Mumbai 400094, Maharashtra, India

[10] Inter Univ Accelerator Ctr, Aruna Asaf Ali Marg, New Delhi 110067, India

[11] Banaras Hindu Univ, Dept Phys, Indian Inst Technol, Varanasi 221005, Uttar Pradesh, India

[12] GITAM Univ, GITAM Inst Sci, Dept Phys, Visakhapatnam 530045, Andhra Pradesh, India

[13] Himachal Pradesh Univ, Dept Phys, Summer Hill, Shimla 171005, India

[14] Panjab Univ, Dept Phys, Chandigarh 160014, India

[15] Indian Inst Technol Kharagpur, Dept Phys, Kharagpur 721302, W Bengal, India

来源：

PHYSICAL REVIEW C | 2022年 / 105卷 / 04期

基金：

美国国家科学基金会;

关键词：

NEUTRON-CORE EXCITATIONS; SHELL-MODEL; EXCITED-STATES;

D O I：

10.1103/PhysRevC.105.044307

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：

High-spin states of Zr-90 have been investigated using the heavy-ion fusion-evaporation reaction Se-82(C-13, 5n) at a beam energy of 60 MeV. Excited levels of Zr-90 have been observed up to an excitation energy of approximate to 13 MeV and a spin of approximate to 20h with the addition of thirty-two new y-ray transitions to the proposed level scheme. Structures of both the positive- and negative-parity states up to the highest observed spin have been interpreted with shellmodel calculations using the GWBXG interaction and a Ni-68 core. Calculations suggest the role of neutron excitations across the N = 50 shell gap for states with greater than 7 MeV excitation energy. High-spin states in these bands are interpreted to be generated by the recoupling of stretched proton and neutron configurations.

引用

页数：13

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