Longitudinal wobbling in 133La

S. Biswas; R. Palit; S. Frauendorf; U. Garg; W. Li; G. H. Bhat; J. A. Sheikh; J. Sethi; S. Saha; Purnima Singh; D. Choudhury; J. T. Matta; A. D. Ayangeakaa; W. A. Dar; V. Singh; S. Sihotra

doi:10.1140/epja/i2019-12856-5

Longitudinal wobbling in ¹³³La

S. Biswas, R. Palit, S. Frauendorf, U. Garg, W. Li, G. H. Bhat, J. A. Sheikh, J. Sethi, S. Saha, Purnima Singh, D. Choudhury, J. T. Matta, A. D. Ayangeakaa, W. A. Dar, V. Singh, S. Sihotra

Radiation Imaging and Advanced Diagnosti

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Abstract

Excited states of ¹³³La have been investigated to search for the wobbling excitation mode in the low-spin regime. Wobbling bands with n_ω= 0 and 1 are identified along with the interconnecting ΔI= 1 , E2 transitions, which are regarded as one of the characteristic features of wobbling motion. An increase in wobbling frequency with spin implies longitudinal wobbling for ¹³³La, in contrast with the case of transverse wobbling observed in ¹³⁵Pr. This is the first observation of a longitudinal wobbling band in nuclei. The experimental observations are accounted for by calculations using the quasiparticle-triaxial-rotor (QTR) model, which attribute the appearance of longitudinal wobbling to the early alignment of a π= + proton pair.

Original language	English
Article number	159
Journal	European Physical Journal A
Volume	55
Issue number	9
DOIs	https://doi.org/10.1140/epja/i2019-12856-5
State	Published - Sep 1 2019

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title = "Longitudinal wobbling in 133La",

abstract = "Excited states of 133La have been investigated to search for the wobbling excitation mode in the low-spin regime. Wobbling bands with nω= 0 and 1 are identified along with the interconnecting ΔI= 1 , E2 transitions, which are regarded as one of the characteristic features of wobbling motion. An increase in wobbling frequency with spin implies longitudinal wobbling for 133La, in contrast with the case of transverse wobbling observed in 135Pr. This is the first observation of a longitudinal wobbling band in nuclei. The experimental observations are accounted for by calculations using the quasiparticle-triaxial-rotor (QTR) model, which attribute the appearance of longitudinal wobbling to the early alignment of a π= + proton pair.",

author = "S. Biswas and R. Palit and S. Frauendorf and U. Garg and W. Li and Bhat, {G. H.} and Sheikh, {J. A.} and J. Sethi and S. Saha and Purnima Singh and D. Choudhury and Matta, {J. T.} and Ayangeakaa, {A. D.} and Dar, {W. A.} and V. Singh and S. Sihotra",

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T1 - Longitudinal wobbling in 133La

AU - Biswas, S.

AU - Palit, R.

AU - Frauendorf, S.

AU - Garg, U.

AU - Li, W.

AU - Bhat, G. H.

AU - Sheikh, J. A.

AU - Sethi, J.

AU - Saha, S.

AU - Singh, Purnima

AU - Choudhury, D.

AU - Matta, J. T.

AU - Ayangeakaa, A. D.

AU - Dar, W. A.

AU - Singh, V.

AU - Sihotra, S.

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Excited states of 133La have been investigated to search for the wobbling excitation mode in the low-spin regime. Wobbling bands with nω= 0 and 1 are identified along with the interconnecting ΔI= 1 , E2 transitions, which are regarded as one of the characteristic features of wobbling motion. An increase in wobbling frequency with spin implies longitudinal wobbling for 133La, in contrast with the case of transverse wobbling observed in 135Pr. This is the first observation of a longitudinal wobbling band in nuclei. The experimental observations are accounted for by calculations using the quasiparticle-triaxial-rotor (QTR) model, which attribute the appearance of longitudinal wobbling to the early alignment of a π= + proton pair.

AB - Excited states of 133La have been investigated to search for the wobbling excitation mode in the low-spin regime. Wobbling bands with nω= 0 and 1 are identified along with the interconnecting ΔI= 1 , E2 transitions, which are regarded as one of the characteristic features of wobbling motion. An increase in wobbling frequency with spin implies longitudinal wobbling for 133La, in contrast with the case of transverse wobbling observed in 135Pr. This is the first observation of a longitudinal wobbling band in nuclei. The experimental observations are accounted for by calculations using the quasiparticle-triaxial-rotor (QTR) model, which attribute the appearance of longitudinal wobbling to the early alignment of a π= + proton pair.

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DO - 10.1140/epja/i2019-12856-5

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SN - 1434-6001

VL - 55

JO - European Physical Journal A

JF - European Physical Journal A

IS - 9

M1 - 159

ER -

Longitudinal wobbling in ¹³³La

Abstract

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