Evidence for octupole correlation and chiral symmetry breaking in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mtext>Cs</mml:mtext><mml:mprescripts /><mml:none /><mml:mn>124</mml:mn></mml:mmultiscripts></mml:math>

Selvakumar, K.; Singh, A. K.; Ghosh, Chandan Kumar; Singh, Purnima; Goswami, A.; Raut, R.; Mukherjee, A.; Datta, Ushasi; Datta, Pradip; Roy, S.; Gangopadhyay, G.; Bhowal, S.; Muralithar, S.; Kumar, Rajesh; Singh, R. P.; Raju, M. Kumar

doi:10.1103/physrevc.92.064307

Cited by 33 publications

(13 citation statements)

References 57 publications

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“…Interestingly, a band-2-like structure also has been observed in the 124 Cs isotone [31,32]. Figure 27 plots the angular frequency versus angular momentum curves for two bands.…”

Section: Bandmentioning

confidence: 69%

“…Figure 27 plots the angular frequency versus angular momentum curves for two bands. It is found that up to 17 − they show a similar pattern except at Comparison of curves of angular frequency, ω (keV/h), as a function of angular momentum (spinh) for band 2 associated with the π h 11/2 νg 7/2 in 122 I and 124 Cs [31]. Inset represents angular momentum with respect to angular frequency.…”

Section: Bandmentioning

confidence: 81%

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Proton-neutron multiplet states and isomers in the odd-odd nucleus I122

Moon

Dracoulis

et al. 2019

Phys. Rev. C

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The level structure of the odd-odd iodine nucleus 122 I has been studied by the 120 Sn ( 7 Li, 5n) 122 I reaction at E lab = 58 MeV. Two chopped beams from the 14UD (Unit Doubled) tandem heavy-ion accelerator at the Australian National University were used; one was a nanosecond (ns) pulsed-beam with separation of 1.7 microseconds (μs) and the second one was a 60-μs beam separated by 880 μs. Through in-beam and out-of-beam γ -ray spectroscopy, the complex proton-neutron multiplet states, including isomers with half-lives of a few tens of ns to a few tens of μs, have been identified. Collective states based on the proton h 11/2 orbital exhibit two kinds of structure depending upon the coupled neutron orbital: a quadrupole vibration when involving the h 11/2 orbital and a γ -soft deformed rotation when involving the g 7/2 orbital. With spherical shell model and deformed shell-model calculations, the observed level structures are explained.

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“…Interestingly, a band-2-like structure also has been observed in the 124 Cs isotone [31,32]. Figure 27 plots the angular frequency versus angular momentum curves for two bands.…”

Section: Bandmentioning

confidence: 69%

Section: Bandmentioning

confidence: 81%

Proton-neutron multiplet states and isomers in the odd-odd nucleus I122

Moon

Dracoulis

et al. 2019

Phys. Rev. C

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“…Nuclear chirality [2] has been intensively studied, and many chiral nuclei have been identified in the A ≈ 130 mass region (e.g., 131 Ba [3], 133 La [4], 133 Ce [5], 135,136,137,138 Nd [6][7][8][9][10][11], 124,126,128,130 Cs [12][13][14][15][16]), as well as in the A ≈ 190 mass region (e.g., 193,194,195,198 Tl [17][18][19][20][21][22]), in the A ≈ 100 mass region (e.g., 103,105,111,113 Rh [23][24][25][26], 105,107 Ag [27,28]), and in the A ≈ 80 mass region (e.g., 78,80 Br [29,30]), making this motion a more common phenomenon. For a recent review on chirality over the nuclear chart see Ref.…”

Section: Introductionmentioning

confidence: 99%

Tilted precession bands in Nd135

Lyu¹,

Petrache²,

Lawrie³

et al. 2021

Phys. Rev. C

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Two new excited bands built on the π h 11/2 configuration have been identified in 135 Nd in addition to the known π h 11/2 band. The energy spectra of the excited bands and the available electromagnetic transition probabilities are in good agreement with theoretical results obtained using quasiparticle-plus-triaxial-rotor model calculations. The properties of the bands identify them as tilted precession bands instead of wobbling bands. Our results give a new insight into the interpretation of the low-lying bands in odd-A mass nuclei, and can stimulate future studies to address the nuclear triaxiality.

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“…To study the characteristics of the doublet bands, the rotational alignment of the doublet bands in 120 I are shown in Fig. 3, compared with the neighboring chiral doublet bands in 122 Cs [19] and 124 Cs [20]. To subtract the angular momentum of the core, the Harris parameters [64], i.e., J 0 = 17.0 2 /MeV, J 1 = 25.8 4 /MeV 3 , are adopted.…”

Section: Introductionmentioning

confidence: 99%

Studying the doublet bands at the borders of the $A \approx 130$ island of chiral candidates: the $^{120}$I case

Guo,

Liu,

et al. 2020

Preprint

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Based on the reported positive-parity doublet bands in 120 I, the corresponding experimental characteristics including rotational alignment have been discussed and corresponding configuration assignment is reexamined. The self-consistent tilted axis cranking relativistic mean-field calculations indicates that this doublet bands is built on configuration πh 11/2 ⊗ νh −1 11/2 . In addition, adopting the two quasiparticles coupled with a triaxial rotor model, the excitation energies, energy staggering parameter S(I), B(M 1)/B(E2), effective angles, and K plots have been discussed and also compared with the available data. All of these results support the interpretation of chiral doublet bands for the positive-parity doublet bands in 120 I, and hence identify this nucleus as the border of the A ≈ 130 island of chiral candidates.

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Evidence for octupole correlation and chiral symmetry breaking inCs124

Cited by 33 publications

References 57 publications

Proton-neutron multiplet states and isomers in the odd-odd nucleus I122

Proton-neutron multiplet states and isomers in the odd-odd nucleus I122

Tilted precession bands in Nd135

Studying the doublet bands at the borders of the $A \approx 130$ island of chiral candidates: the $^{120}$I case

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