A Semi-Classical Approach to Signature Splitting and Signature Inversion in Odd–odd Nuclei

Kumar, V.; Kumar, Suresh; Kumar, Sushil; Hasan, Z.; Koranga, Bipin Singh; Kumar, Deepak; Negi, D.; Angus, L.

doi:10.1142/s0218301311018447

Cited by 3 publications

(3 citation statements)

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“…The 130 La nuclei were populated in the 116 Sn( 16 O,pn) reaction, using a 70 MeV 16 O pulsed beam (pulse width of 3 ns at a repetition period of 800 ns) on isotopically enriched metallic 116 Sn targets. For the g-factor determination the target consisted of 0.6 mg/cm 2 metallic tin evaporated on a thick Pb backing.…”

Section: Methodsmentioning

confidence: 99%

“…From these matrices delayed energy spectra have been created to investigate the isomeric transitions. Illustrative delayed γ spectra obtained in the quadrupole interaction measurement for two successive time intervals of 350 ns after the 16 O beam pulse are shown in Fig. 6.…”

Section: A Level Schemementioning

confidence: 99%

“…The cause of signature inversion has been the subject of investigation in the framework of the particle-triaxial-rotor model [15,16] or the triaxial projected shell model approach [17]. To decide whether signature inversion exists or not, it is important to know the exact spin values of the states in the band.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Methodsmentioning

confidence: 99%

Section: A Level Schemementioning

confidence: 99%