Revealing multiple band structures in 
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 from 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math>
-induced reactions

Banik, R.; Bhattacharyya, S.; Biswas, S.; Bhattacharya, Subhashish; Mukherjee, G.; Rajbanshi, S.; Dar, Shabir; Nandi, S.; Ali, Sajad; Chatterjee, S.; Das, Sangeeta; Gupta, S. Das; Ghugre, S. S.; Goswami, A.; Lemasson, A.; Mondal, Debashis; Mukhopadhyay, S.; Pai, H.; Pal, S.; Pandit, Deepak; Raut, R.; Ray, Pulak; Rejmund, M.; Samanta, Sudip

doi:10.1103/physrevc.101.044306

Cited by 14 publications

(12 citation statements)

References 38 publications

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“…TPSM energies for the lowest bands after configuration mixing are plotted along with the available experimental data for 129,131 Xe isotopes. Data is taken from [52][53][54]. mations listed in Table 1.…”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

“…High-spin states in odd-neutron Xe-isotopes have been investigated by various experimental groups [10,47,48,50,52,53,71], and in some nuclei side bands apart from the yrast states have been populated up to quite high angular momentum. In Figs.…”

Section: Resultsmentioning

confidence: 99%

Extended triaxial projected shell model approach for odd-neutron nuclei

Jehangir,

Nazir,

Bhat

et al. 2022

Preprint

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“…Gamma-bands built on the ground-state configuration have been systematically reported in even-even Xe isotopes [22]. Further, the γ-band coupled to the νh 11/2 configuration has also been reported in corresponding odd-A Xe isotopes [23][24][25][26][27][28]. A γ-band built on an aligned twoquasiparticle configuration has been observed in 118,120 Xe [29,30].…”

Section: Introductionmentioning

confidence: 80%

“…Surprisingly, in spite of having rich experimental information on the high-spin states in odd-A Xe isotopes, the γ-band built on a three or higher quasiparticle configuration has not been reported. Recently, a weak indication of γ-vibration at higher spin is reported in 131 Xe [28]. But, in the absence of the in-band transitions, the γ-vibrational nature of this band cannot be concluded conclusively.…”

Section: Introductionmentioning

confidence: 97%

Three-quasineutron γ-band in ¹²⁷Xe

Chakraborty

Sharma

Jehangir

et al. 2023

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

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Structures of negative parity multi-quasiparticle states in 127Xe have been investigated through in-beam γ-ray spectroscopy. Excited states were populated via 122Sn(9Be, 4nγ)127Xe fusion-evaporation reaction at Ebeam = 48 MeV. Two new negative parity bands have been identiﬁed and their structures have been discussed using the triaxial projected shell model (TPSM) approach. One of the bands is established above the Iπ = 27/2- state at 3702 keV and based on the experimental inferences and TPSM results, this band is interpreted as a γ-band built on a three-quasineutron conﬁguration. The second sequence, found above Iπ = 31/2- state at 4848 keV, is proposed to have a two-proton aligned conﬁguration (νh11/2 ⊗ πh11/2 2), considering the properties of this band with the neighbouring isotopes. The analysis of the TPSM wave function substantiates the proposed interpretation of this band.

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“…Nuclei in the mass ∼ 130 region are known to exhibit a rich variety of shapes and structures. In this region, interesting phenomena of shape co-existence [1,2], strongly deformed [3] to superdeformed [4,5] shapes, chiral doublet bands [6,7] and γ-bands built on quasiparticle states [8][9][10] have been observed. This is the heaviest mass region with valence neutrons and protons occupying the same intruder orbital, 1h 11/2 .…”

Section: Introductionmentioning

confidence: 98%

Systematic study of near yrast band structures in odd-mass $^{125-137}$Pr and $^{127-139}$Pm isotopes

Jehangir,

Bhat,

Rather

et al. 2021

Preprint

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In the present work, the basis space in the triaxial projected shell model approach is expanded to include three and five quasiparticle configurations for odd-proton systems. This extension allows to investigate the high-spin band structures observed in odd-proton systems up to and including the second band crossing region, and as a first major application of this development, the high-spin properties are investigated for odd-mass 125−137 Pr and 127−139 Pm isotopes. It is shown that band crossings in the studied isotopes have mixed structures with first crossing dominated by one-proton coupled to two-neutron configuration for the lighter isotopes which then changes to three-proton configuration with increasing neutron number. Further, γ-bands based on quasiparticle states are also delineated in the present work, and it is predicted that these band structures built on threequasiparticle configurations become favoured in energy for heavier systems in the high-spin region.

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Revealing multiple band structures in Xe131 from α -induced reactions

Cited by 14 publications

References 38 publications

Extended triaxial projected shell model approach for odd-neutron nuclei

Extended triaxial projected shell model approach for odd-neutron nuclei

Three-quasineutron γ-band in ¹²⁷Xe

Systematic study of near yrast band structures in odd-mass $^{125-137}$Pr and $^{127-139}$Pm isotopes

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Revealing multiple band structures in Xe131 from α -induced reactions

Cited by 14 publications

References 38 publications

Extended triaxial projected shell model approach for odd-neutron nuclei

Extended triaxial projected shell model approach for odd-neutron nuclei

Three-quasineutron γ-band in 127Xe

Systematic study of near yrast band structures in odd-mass $^{125-137}$Pr and $^{127-139}$Pm isotopes

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Product

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Three-quasineutron γ-band in ¹²⁷Xe