High spin structure of 117I

Moon, C. B.; Komatsubara, T.; Shizuma, T.; Sasaki, Y.; Ishiyama, H.; Jumatsu, T.; Furuno, K.

doi:10.1007/s100500050251

Cited by 12 publications

(3 citation statements)

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“…The energy difference between states with same spin of bands 1 and 2, and those of bands 3 and 4 lies between 200 and 300 keV. Similar bands with energy difference between 300 and 400 keV have also been observed in neighboring iodine nuclei and have been interpreted in terms of coupling of πg 9/2 configuration with the γ vibration [8,29,30]. Therefore, a possible interpretation of bands 1 and 2 in 122 I is πg 9/2 νh 11/2 configuration coupled to γ -phonon vibration.…”

Section: A Low-and Medium-spin Statessupporting

confidence: 64%

High-spin spectroscopy of122I

et al. 2012

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High-spin spectroscopy of I-122Singh, Purnima; Nag, Somnath; Selvakumar, K.; Singh, A. K.; Ragnarsson, Ingemar; Bisoi, Abhijit; Goswami, A.; Bhattacharya, S.; Kumar, S.; Singh, K.; Sethi, J.; Saha, Sudipta; Trivedi, T.; Jadhav, S. V.; Donthi, R.; Naidu, B. S.; Palit, R.High-spin states in 122 I have been investigated using the 116 Cd( 11 B,5n) 122 I reaction at a beam energy of 65 MeV and γ -ray coincidence events were recorded with the INGA spectrometer. The level scheme of 122 I has been extended up to spin I = 30. Experimental features, such as band-crossing frequencies, aligned angular momenta, signature splitting, and B(M1)/B(E2) ratios have been used for configuration assignments to low-energy band structures. Maximally aligned states involving all eight particles outside the 114 Sn core and states with one particle antialigned have been identified. Cranked Nilsson-Strutinsky calculations have been used to interpret high-spin structures.

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Section: A Low-and Medium-spin Statessupporting

confidence: 64%

High-spin spectroscopy of122I

et al. 2012

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“…The band members can be identified as the fingerprint states for this nucleus as it is well observed in all the neighbouring odd-mass iodine isotopes. Experimentally, this band has been observed with prolate deformation in the neighbouring heavier odd-mass iodine nuclei [19]. The corresponding levels of the band are connected by J = 1 M1 transitions as well as J = 2E2 crossover transitions.…”

mentioning

confidence: 72%

Fingerprint states in^115,117,119I in the framework of the particle-rotor model

Goswami¹,

Sen²

2012

Phys. Scr.

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Odd-mass iodine nuclei with Z = 53 have low-lying ΔJ = 1 and ΔJ = 2 bands based on πg9/2 and πh11/2 orbitals. Using the particle-rotor model we have investigated the band structure of these states. In this model, the experimental excitation energies of the A + 1 core were fed directly as the input parameter. A standard axially symmetric Nilsson potential has been used with prolate deformation. The parameters of the model were chosen from earlier theoretical work and experimental odd–even mass difference. Only the Coriolis attenuation factor has been treated as the adjustable parameter. We have also investigated the alignment plot to study the alignments of these bands up to fairly high spin. The extracted B(M1)/B(E2) ratios for the band based on πg9/2 orbital have been utilized to obtain information about the deformation parameter. With the same deformation parameter excellent agreement has been achieved in the relative bandhead separation of the πg9/2 and πh11/2 bands. The band structure of the πg9/2 as well as πh11/2 band has been calculated with that deformation. The experimental transition probability and branching ratio were also compared with the calculated data.

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“…In particular, the highangular momentum intruder h 11/2 orbital plays a distinctive role in shaping nuclear structure in this region. Indeed, the collective bands built on the proton h 11/2 orbital in odd-mass I, 62 N 74 [1][2][3][4][5][6][7][8], have been observed to dominate the yrast sequence. For odd-mass Te and Xe, dominant yrast states are also built on the neutron h 11/2 orbital.…”

Section: Introductionmentioning

confidence: 99%

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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High spin structure of 117I

Cited by 12 publications

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High-spin spectroscopy of122I

High-spin spectroscopy of122I

Fingerprint states in^115,117,119I in the framework of the particle-rotor model

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

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High spin structure of 117I

Cited by 12 publications

References 0 publications

High-spin spectroscopy of122I

High-spin spectroscopy of122I

Fingerprint states in115,117,119I in the framework of the particle-rotor model

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

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Fingerprint states in^115,117,119I in the framework of the particle-rotor model