Cross-shell excited states in 32Si and 29Al populated using fusion-evaporation

被引：0

作者：

Williamsa, J. ^{[1
]}

Hackmana, G. ^{[1
]}

Starosta, K. ^{[2
]}

Lubna, R. S. ^{[4
]}

Choudhary, Priyanka ^{[5
,12
]}

Sahoo, S. ^{[5
]}

Srivastava, P. C. ^{[5
]}

Andreoiu, C. ^{[2
]}

Annen, D. ^{[2
]}

Asch, H. ^{[3
]}

Badanage, M. D. H. K. G. ^{[2
]}

Ball, G. C. ^{[1
]}

Beuschlein, M. ^{[6
]}

Bidaman, H. ^{[7
]}

Bildstein, V. ^{[7
]}

Coleman, R. ^{[7
]}

Garnsworthy, A. B. ^{[1
]}

Greaves, B. ^{[7
]}

Leckenby, G. ^{[1
,8
]}

Karayonchev, V. ^{[1
,13
]}

Martin, M. S. ^{[3
,13
]}

Natzke, C. ^{[1
]}

Petrache, C. M. ^{[9
]}

Radich, A. ^{[7
]}

Raleigh-Smitha, E. ^{[1
]}

Rhodes, D. ^{[1
,14
]}

Russellj, R. ^{[10
]}

Satrazani, M. ^{[11
]}

Spagnoletti, P. ^{[2
]}

Svensson, C. E. ^{[1
]}

Tam, D. ^{[3
]}

Wu, F. ^{[2
]}

Yates, D. ^{[1
,8
]}

Yu, Z. ^{[2
]}

机构：

[1] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada

[2] Simon Fraser Univ, Dept Chem, 8888 Univ Dr, Burnaby, BC V5A 1S6, Canada

[3] Simon Fraser Univ, Dept Phys, 8888 Univ Dr, Burnaby, BC V5A 1S6, Canada

[4] Michigan State Univ, Facil Rare Isotope Beams, 640 South Shaw Lane, E Lansing, MI 48824 USA

[5] Indian Inst Technol Roorkee, Dept Phys, Roorkee 247667, India

[6] Tech Univ Darmstadt, Inst Nucl Phys, Dept Phys, Schlossgartenstr 9, D-64289 Darmstadt, Germany

[7] Univ Guelph, Dept Phys, 50 Stone Rd, Guelph, ON N1G 2W1, Canada

[8] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[9] Univ Paris Saclay, CNRS, IN2P3, IJCLab, F-91405 Orsay, France

[10] Univ Surrey, Guildford GU2 7XH, England

[11] UNIV LIVERPOOL, LIVERPOOL L69 3BX, England

[12] KTH Royal Inst Technol, Dept Phys, SE-10691 Stockholm, Sweden

[13] Argonne Natl Lab, 9700 S Cass Ave, Lemont, IL 60439 USA

[14] Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA

来源：

NUCLEAR PHYSICS A | 2025年 / 1057卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Fusion-evaporation; Gamma-ray spectroscopy; Cross-shell excitation; Shell evolution;

D O I：

10.1016/j.nuclphysa.2025.123042

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：

In the neutron-rich sd shell near the N = 20 'island of inversion', the evolution of the N = 20 shell gap is indicated by the energies of negative-parity states which primarily arise due to single neutron excitation to higher lying orbitals across the shell gap. These negative-parity states often have high spin (due to the participation of the 0f7/2 orbital) and are therefore preferentially populated using fusion-evaporation reactions. We have studied the intermediate energy levels of 32Si and 29Al using 12C(22Ne,2p) and 12C(22Ne,alpha p) reactions, identifying several negative-parity states in both nuclides.

引用

页数：4