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Spectroscopy of 187Tl: shape coexistence
The prompt and delayed γ -ray spectra of 187 Tl was studied via the 142 Nd( 50 Cr, 3 p 2 n ) 187 Tl fusion-evaporation reaction at a beam energy of 255 MeV. An enhanced level scheme of 187 Tl was established. The collective bands with one-quasiparticle configurations from the 2 f 7 / 2 , 1 h 9 / 2 ,...
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Published in: | The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2024-08, Vol.60 (8), Article 165 |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | The prompt and delayed
γ
-ray spectra of
187
Tl was studied via the
142
Nd(
50
Cr, 3
p
2
n
)
187
Tl fusion-evaporation reaction at a beam energy of 255 MeV. An enhanced level scheme of
187
Tl was established. The collective bands with one-quasiparticle configurations from the
2
f
7
/
2
,
1
h
9
/
2
,
1
h
11
/
2
and
1
i
13
/
2
orbitals and high-lying structures with possible three-quasiparticle configurations are investigated in terms of the tilted axis cranking covariant density functional theory. At low excitation energy, the rotational bands with one-quasiparticle configurations reflect coexistence of three shapes: prolate, triaxial, and oblate. The possible shapes of two microsecond isomers at high excitation energy are proposed. |
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ISSN: | 1434-601X 1434-6001 1434-601X |
DOI: | 10.1140/epja/s10050-024-01395-3 |