Decoupled and semi-decoupled bands in 
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 and 
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Negi, D.; Chauhan, Prashant; Chowdhury, P.; Janssens, R. V. F.; Carpenter, M. P.; Khoo, T. L.; Kondev, F. G.; Lauritsen, T.; Lister, C. J.; Seweryniak, D.

doi:10.1103/physrevc.100.014329

Cited by 5 publications

(3 citation statements)

References 42 publications

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“…Interestingly, similar type of bands with large signature splitting were also reported in the Hg and Pt nuclei around A = 200 region in the vicinity of the Z = 82 proton shell closure. These bands were suggested as the semi-decoupled bands with the high-j i 13/2 and low-j p 1/2 /p 3/2 / f 5/2 multi-quasineutron configurations [38][39][40].…”

Section: Discussionmentioning

confidence: 99%

Lifetime measurements in ¹⁰⁴Pd

Majumder

Sharma

Chakraborty

et al. 2020

J. Phys. G: Nucl. Part. Phys.

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High spin states in 104Pd were populated via 94Zr(13C, 3nγ) fusion-evaporation reaction at a beam energy of 55 MeV. The Indian National Gamma Array was utilized to detect the de-exciting γ-rays. Lifetimes of states in the negative parity bands have been determined using the Doppler shift attenuation method. The present lifetime results suggest a moderate quadrupole deformation (β 2 ≈ 0.2) for the negative parity bands. The Woods–Saxon total Routhian surface calculations have also been carried out which predicted a similar deformation for these bands. In addition, lifetimes of states in the positive parity band have also been determined. Present results found in agreement with the earlier reported values of lifetimes and hence agreed with the antimagnetic rotational character of the band as interpreted earlier.

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Section: Discussionmentioning

confidence: 99%

Lifetime measurements in ¹⁰⁴Pd

Majumder

Sharma

Chakraborty

et al. 2020

J. Phys. G: Nucl. Part. Phys.

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“…In recent years, some major advancements in the spectroscopic techniques has made it feasible to populate the high-spin band structures in atomic nuclei to the extremes of angular-momentum, excitation energy and isospin [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. In some nuclei, the high-spin states have been studied up to angular momentum, I ≈ 60h and as many as twenty side bands have been identified [9][10][11][12]14].…”

Section: Introductionmentioning

confidence: 99%

Extended triaxial projected shell model approach for odd-neutron nuclei

Jehangir,

Nazir,

Bhat

et al. 2022

Preprint

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In an effort to elucidate the rich band structures observed in odd-neutron systems, triaxial projected shell model approach is extended to include three-quasineutron and five-quasiparticle configurations. This extension makes it possible to investigate the high-spin states up to and including the second band crossing. Detailed investigation has been performed for odd-mass Xe isotopes with the extended basis, and it is shown that character of the band crossing along the yrast line changes with shell filling of the 1h 11/2 orbital. Further, it is observed that the three-quasiparticle state that crosses the ground-state configuration, leading to the normal band crossing phenomenon along the yrast line, first crosses the γ band based on the ground-state configuration at an earlier spin value. This crossing feature explains the occurrence of the signature inversion observed in the γ bands for some of the studied isotopes.

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“…Nuclei in the A ≈ 200 region, just below doubly magic 208 Pb, exhibit diverse structural phenomena. Isotopes with several valence nucleons show evidence for moderate deformation [1][2][3], however, the proximity to both neutron and proton shell closures leads to a substantial contribution of intrinsic degrees of freedom (e.g., particle-hole excitations) to the level structure [4][5][6][7]. Isotopes of Hg, where both proton and neutron shells are almost filled, are characterized by oblate deformation near their ground states.…”

Section: Introductionmentioning

confidence: 99%

Nanosecond isomers and the evolution of collectivity in stable, even- A Hg isotopes

et al. 2021

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Isomeric states and associated collective structures have been studied up to high spin in 198,200,202 Hg using multinucleon transfer reactions and the Gammasphere array. A coupled rotational band, with possible fourquasiparticle character, is established in 198 Hg. Sequences built on two-quasiparticle, positive-and negativeparity levels are assigned to 202 Hg. New isomers in 202 Hg with I π = (7 − ) and (9 − ), and T 1/2 = 10.4(4) ns and 1.4(3) ns, respectively, have been identified. A half-life of 1.0(3) ns is established for the I π = 12 + state in 200 Hg. B(E 2) values deduced from isomeric transitions in Hg isotopes indicate that, while collectivity near the ground state gradually diminishes from N = 112 to N = 124, it is found to increase for the 12 + and 9 − states up to N = 118, followed by a reduction for higher neutron numbers. Calculations using the ultimate cranker code provide insight into the variation of deformation with spin and allow for an understanding of observed band crossings. The evolution of collectivity with spin, and along the isotopic chain, is described.

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Decoupled and semi-decoupled bands in Hg197 and Hg199

Cited by 5 publications

References 42 publications

Lifetime measurements in ¹⁰⁴Pd

Lifetime measurements in ¹⁰⁴Pd

Extended triaxial projected shell model approach for odd-neutron nuclei

Nanosecond isomers and the evolution of collectivity in stable, even- A Hg isotopes

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Decoupled and semi-decoupled bands in Hg197 and Hg199

Cited by 5 publications

References 42 publications

Lifetime measurements in 104Pd

Lifetime measurements in 104Pd

Extended triaxial projected shell model approach for odd-neutron nuclei

Nanosecond isomers and the evolution of collectivity in stable, even- A Hg isotopes

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Product

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Lifetime measurements in ¹⁰⁴Pd

Lifetime measurements in ¹⁰⁴Pd