One-quasiparticle bands in neutron-rich<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">W</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>187</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>

Shizuma, T.; Ishii, T.; Makii, H.; Hayakawa, Takehito; Matsuda, M.; Shigematsu, S.; Ideguchi, E.; Zheng, Y.; Liu, M.; Morikawa, T.; Oi, Makito

doi:10.1103/physrevc.77.047303

Cited by 9 publications

(4 citation statements)

References 21 publications

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“…The present work describes the results of β-decay measurements of the ground state 187g Ta, whose spin assignment will be determined by using the log( f t) values extracted from the measured β-decay half-life and β-branching ratios. The γ rays seen in the present experiment had been observed in-beam by Shizuma et al [16], but they had not been seen previously in β decay.…”

Section: Introductionsupporting

confidence: 50%

Ground-state β -decay spectroscopy of Ta187

et al. 2022

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Beta-decay spectroscopy of the 187 Ta ground state was performed at the KEK Isotope Separation System. βdelayed γ rays corresponding to the previously reported in-beam transitions were observed. The β-decay half-life of the 187 Ta ground state was determined to be 283(10) s by analyzing a time spectrum of β-γ coincidence events. The β-decay branching ratio and log( f t) values were evaluated for the first time. Based on the newly evaluated log( f t) values of >6.0 and a decay scheme, spin-parity values of I π = 7/2 + originating from the odd-proton orbit π 7/2[404] were assigned with high confidence, which is consistent with the systematics of neighboring odd-A nuclides.

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Section: Introductionsupporting

confidence: 50%

Ground-state β -decay spectroscopy of Ta187

et al. 2022

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“…For example, high-spin states in neutron-rich 182 Hf have been successfully identified through a deep inelastic reaction with a 136 Xe beam incident on 180 Hf [1]. Using 18 O-induced multi-nucleon transfer reactions such as ( 18 O, 16 O), ( 18 O, 17 O), ( 18 O, 19 F), and ( 18 O, 20 Ne), modest spin states of neutron-rich nuclei have been studied [4][5][6][7][8][9]. In the present work, excited states of the neutron-rich 183 Ta have been populated following a two-neutron transfer reaction of 181 Ta( 18 O, 16 O).…”

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confidence: 99%

A 3-quasiparticle isomer in neutron-rich 183Ta

et al. 2009

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Excited states in neutron-rich 183 Ta have been studied using a two-neutron transfer reaction of 181 Ta(18 O, 16 O). In-beam γ-rays were measured in coincidence with scattered ions detected by a highresolution ΔE-E Si telescope for reaction channel selection. Previously known 1-quasiparticle bands are extended to higher spins, and several levels including a T 1/2 = 0.9(3) μs 3-quasiparticle isomer are identified.

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“…In a great number of odd-A transitional nuclei, structures built on neutron Nilsson orbitals associated with the i 13/2 shell have been extensively studied through in-beam γ -ray spectroscopy [1][2][3][4][5][6][7]. Furthermore, a number of lowlying negative-parity bands have been observed in several odd-A deformed nuclei in the 180-190 mass region [7,8].…”

Section: Introductionmentioning

confidence: 99%

Low- and medium-spin negative-parity bands in the Os187 nucleus

Sithole¹,

Schäfer²,

Lawrie³

et al. 2021

Phys. Rev. C

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Low-and medium-spin negative-parity bands of 187 Os have been studied using the AFRican Omnipurpose Detector for Innovative Techniques and Experiments (AFRODITE) array, following the 186 W( 4 He, 3n) 187 Os reaction at a beam energy of 37 MeV. In the current work, all the previously known bands have been significantly extended and three new bands have been added to the level scheme. The angular distribution ratio (R AD ) and polarization measurements have been used to assign spin and parity to the observed new levels. The configurations of some of the bands have been modified. The observed bands are interpreted within the cranked shell model (CSM) and cranked Nilsson-Strutinsky-Bogoliubov (CNSB) formalism. Comparison with experimental data shows good agreements. Systematic comparison with the neighboring 185 Os isotope is also discussed.

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One-quasiparticle bands in neutron-richW187

Cited by 9 publications

References 21 publications

Ground-state β -decay spectroscopy of Ta187

Ground-state β -decay spectroscopy of Ta187

A 3-quasiparticle isomer in neutron-rich 183Ta

Low- and medium-spin negative-parity bands in the Os187 nucleus

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