Triaxial projected shell model study of the rapid changes in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>B</mml:mi><mml:mo>(</mml:mo><mml:mi>E</mml:mi><mml:mn>2</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:math>for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mrow><mml:mn>180</mml:mn><mml:mo>−</mml:mo><mml:mn>190</mml:mn></mml:mrow></mml:msup></mml:math>Pt isotopes

Bhat, G. H.; Sheikh, J. A.; Sun, Yang; Garg, U.

doi:10.1103/physrevc.86.047307

Cited by 22 publications

(12 citation statements)

References 54 publications

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“…As in 188 Pt, the increase of B(E2) values from 2 + → 4 + is more gradual than sharp (considering error bars) and constant thereafter, so the band mixing scenario, suggested for 182,184,186 Pt nuclei [7], does not fit well for this nucleus. However, when compared with the theoretical B(E2) values calculated using triaxial projected shell model [16] for 188 Pt nucleus, the experimental values show a good agreement with the calculations suggesting an increase in axial deformation of the nucleus for spins 2 + → 4 + in 188 Pt. In order to look into the issue of A = 188, as the transition point in prolate-oblate shape transition Pt isotopes, we plotted the average experimental Q t values of even-even Pt isotopes, with mass A = 182-188.…”

Section: Discussion Of Resultssupporting

confidence: 64%

Investigating Prolate--Oblate Shape Inversion in Pt Nuclei Near $A \sim 188$

Chamoli¹,

Rohilla²,

Gupta³

et al. 2017

Acta Phys. Pol. B

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Lifetimes have been measured of the low-and intermediate-spins states in 188 Pt nucleus using the recoil distance Doppler shift technique at IUAC, Delhi. The nuclear states of interest were populated via 174 Yb(18 O,4n) 188 Pt reaction at a beam energy of 79 MeV provided by 15 UD Pelletron accelerator. The extracted B(E2) values show an increase up to 4 + state and then a near constant behavior with spin along yrast band, indicating change of the nuclear shape in 188 Pt at low spins. The average absolute β 2 = 0.20(3) obtained from measured B(E2) values matches well the values predicted by CHFB and IBM calculations for oblate (β 2 ∼ −0.19) and prolate (β 2 ∼ 0.22) shapes.

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Section: Discussion Of Resultssupporting

confidence: 64%

Investigating Prolate--Oblate Shape Inversion in Pt Nuclei Near $A \sim 188$

Chamoli¹,

Rohilla²,

Gupta³

et al. 2017

Acta Phys. Pol. B

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“…[35]. [5,18,[36][37][38]. The theoretical work, therefore, suggests that, from A = 176 to 184, Pt isotopes could be studied by using the axial mean-field approach.…”

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confidence: 99%

Lifetime measurement of the first2+state inPt178

Chen

et al. 2014

Phys. Rev. C

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The lifetime of the 2 + 1 state in 178 Pt was measured by using fast-timing techniques with the high-purity Ge and LaBr 3 : Ce array using the 154 Gd( 28 Si,4n) reaction at a beam energy of 146 MeV. The deduced B(E2,2 + 1 → 0 + 1 ) strength is discussed in relation to the systematics of the previously reported B(E2,2 + 1 → 0 + 1 ) strengths in the light even-even 176-184 Pt isotopes and compared with calculations of the generator coordinate method. The present results support a configuration-mixing interpretation for low-spin states in these light Pt isotopes.

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“…In the next section, we provide a few details of the TPSM model for completeness and further details can be found in our earlier publications [13][14][15][16][17][18]. Section III is completely devoted to the investigation of 76 Ge and in section IV, the results of the neighboring Ge-and Se-isotopes are presented and discussed.…”

Section: Introductionmentioning

confidence: 99%

Nature ofγdeformation in Ge and Se nuclei and the triaxial projected shell model description

et al. 2014

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Recent experimental data have demonstrated that 76 Ge may be a rare example of a nucleus exhibiting rigid γ-deformation in the low-spin regime. In the present work, the experimental analysis is supported by microscopic calculations using the multi-quasiparticle triaxial projected shell model (TPSM) approach. It is shown that to best describe the data of both yrast and γ-vibrational bands in 76 Ge, a rigid-triaxial deformation parameter γ ≈ 30 • is required. TPSM calculations are discussed in conjunction with the experimental observations and also with the published results from the spherical shell model. The occurrence of a γγ-band in 76 Ge is predicted with the bandhead at an excitation energy of ∼ 2.5 MeV. We have also performed TPSM study for the neighboring Ge-and Se-isotopes and the distinct γ-soft feature in these nuclei is shown to result from configuration mixing of the ground-state with multi-quasiparticle states.

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Triaxial projected shell model study of the rapid changes inB(E2)for180−190Pt isotopes

Cited by 22 publications

References 54 publications

Investigating Prolate--Oblate Shape Inversion in Pt Nuclei Near $A \sim 188$

Investigating Prolate--Oblate Shape Inversion in Pt Nuclei Near $A \sim 188$

Lifetime measurement of the first2+state inPt178

Nature ofγdeformation in Ge and Se nuclei and the triaxial projected shell model description

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