Medium- and high-spin band structure of the chiral candidate<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>132</mml:mn></mml:msup></mml:math>La

Kuti, I.; Tímár, J.; Sohler, D.; Paul, E. S.; Starosta, K.; Astier, A.; Bazzacco, D.; Bednarczyk, P.; Boston, A. J.; Buforn, N.; Chantler, H. J.; Chiara, C. J.; Clark, R. M.; Cromaz, M.; Descovich, M.; Dombrádi, Zsolt; Fallon, P.; Fossan, D. B.; Fox, C.; Gizon, A.; Gizon, J.; Hecht, A. A.; Kintz, N.; Koike, T.; Lee, I. Y.; Lunardi, S.; Macchiavelli, A. O.; Nolan, P. J.; Nyakó, B. M.; Petrache, C. M.; Sampson, J.; Scraggs, H. C.; Tornyi, T.; Wadsworth, R.; Walker, Angela Hight; Zolnai, L.

doi:10.1103/physrevc.87.044323

Cited by 16 publications

(6 citation statements)

References 45 publications

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“…The level pattern of the πh 11/2 ⊗ νh −1 11/2 band in 136 La is very similar to those in 130 La [16], 132 La [17], and 134 La [18]. Therefore, from the systematics, we reasonably propose the spin-parity of the band members as (9 + ) ( E x = 0.865 MeV) up to (13 + ) ( E x = 2.112 MeV).…”

Section: Level Schemesupporting

confidence: 61%

High-spin states inLa136and possible structure change in theN=79region

et al. 2015

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High-spin states in the odd-odd nucleus 136 La, which is located close to the β-stability line, have been investigated in the radioactive-beam-induced fusion-evaporation reaction 124 Sn( 17 N,5n). The use of the radioactive beam enabled a highly sensitive and successful search for a new isomer [14 + , T 1/2 = 187 (27) ns] in 136 La. In the A = 130-140 mass region, no such long-lived isomer has been observed at high spin in odd-odd nuclei. The 136 La level scheme was revised, incorporating the 14 + isomer and six new levels. The results were compared with pair-truncated shell model (PTSM) calculations which successfully explain the level structure of the πh 11/2 ⊗ νh −1 11/2 bands in 132 La and 134 La. The isomerism of the 14 + state was investigated also by a collective model, the cranked Nilsson-Strutinsky (CNS) model, which explains various high-spin structures in the medium-heavy mass region. It is suggested that a new type of collective structure is induced in the PTSM model by the increase of the number of πg 7/2 pairs, and/or in the CNS model by the configuration change associated with the shape change in 136 La.

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Section: Level Schemesupporting

confidence: 61%

High-spin states inLa136and possible structure change in theN=79region

et al. 2015

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“…One of the most striking features was the observation of the nearly degenerate doublet bands built on the πh 11/2 ⊗ νh 11/2 configuration, interpreted as the manifestation of chiral symmetry breaking [1]. This phenomenon has been rather intensively investigated in recent years both experimentally [2][3][4][5][6][7][8] and theoretically [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Structure ofLa130at low and medium spins

et al. 2014

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Low-and medium-spin states of the odd-odd nucleus 130 La were studied by in-beam and pulsed-beam γ -ray spectroscopy using the 121 Sb( 12 C,3n) and 116 Sn( 16 O,pn) fusion-evaporation reactions. The decay out of the πh 11/2 ⊗ νh 11/2 and πh 11/2 ⊗ νg 7/2 rotational structures to the ground state has been elucidated. Spin and parity values have been assigned to most of the newly observed states, as well as to the bandheads of the rotational bands. Two isomeric states were identified and placed in the level scheme, with the characteristics J π = 5 + , E x = 214.0 keV, T 1/2 = 0.76(9) μs and J π = 6 + , E x = 319.1 keV, T 1/2 = 33(1) ns. The magnetic and quadrupole interactions of the 6 + isomeric state have been investigated by the time-differential perturbed γ -ray angular distribution method. The g factor value, g(6 + ) = +0.48(3), and the quadrupole coupling constant in polycrystalline metallic Sn lattice, ν Q (6 + ) = 37(4) MHz, have been derived. The experimental data are compared with the predictions of two-quasiparticles plus rotor model calculations.

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“…The axial coupling constant g A adopted in each study is given in the second column. In the last column half-lives are given in units of • 10 yr meV 30 2 , where the phase-space factor is taken from [68] except for the SM(GCN50.82) [31]. , which are inversely proportional to the NME squared, are given in the last column.…”

Section: Theoretical Framework and Results For Neutrinoless Double Be...mentioning

confidence: 99%

“…For nuclei of mass number A∼130, various characteristic phenomena in the nuclear structure are known. One is the appearance of the doublet bands in doubly-odd nuclei, which are almost energetically degenerate ΔI=1 bands with the same parity [1][2][3]. The doublet bands are theoretically analyzed in terms of the phenomenological particle-rotor model [4], the projected shell model [5,6], the quadrupole coupling model [7][8][9][10], and the pair-truncated shell model (PTSM) [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Nuclear matrix elements of neutrinoless double beta decay for masses 130 and 136 in the shell model

Higashiyama¹,

Yanase²,

Yoshinaga³

et al. 2020

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

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The nuclear matrix elements (NMEs) for the 0νββ decays from 130Te to 130Xe and from 136Xe to 136Ba are calculated in the nuclear shell model. In order to investigate the model dependence on the NMEs, pair-truncated shell-model calculations are also performed. It is found that the NMEs are sensitive to the ground-state correlations. In particular, the isovector monopole-pairing interactions largely affect the NMEs.

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Medium- and high-spin band structure of the chiral candidate132La

Cited by 16 publications

References 45 publications

High-spin states inLa136and possible structure change in theN=79region

High-spin states inLa136and possible structure change in theN=79region

Structure ofLa130at low and medium spins

Nuclear matrix elements of neutrinoless double beta decay for masses 130 and 136 in the shell model

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