Structure of proton-deficient nuclei near 208Pb

Rydström, L; Blomqvist, J.; Liotta, R.J.; Pomar, C.

doi:10.1016/0375-9474(90)93152-v

Cited by 33 publications

(23 citation statements)

References 31 publications

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“…The 458-keV (17 + → 15 + ) transition is of pure E2 character while the 543-keV (15 + → 14 − ) γ ray is a pure E1 transition. The attenuation of the former transition was measured to be 0.54 (15) and agrees with that inferred from the latter of 0.64 (14). The attenuation of the A 2 coefficient resulting from this analysis is then 0.6(1) [10].…”

Section: B Angular Distributions and Multipolarity Determinationssupporting

confidence: 80%

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Yrast structure of206Bi: Isomeric states and one-proton-particle, three-neutron-hole excitations

Cieplicka¹,

Maier²,

Fornal³

et al. 2012

Phys. Rev. C

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New high-spin microsecond isomers, with J π =(31 + ) and J π =(28 − ), have been identified in 206 Bi at 10170 and 9233 keV, respectively, using γ-ray coincidence spectroscopy following deep-inelastic reactions with the 76 Ge+ 208 Pb system. Yrast and near-yrast levels populated in the decay of these isomers have been located and interpreted with the help of shell-model calculations. The states identified at energies up to approximately 7 MeV can be described well in terms of one-protonparticle, three-neutron-hole couplings.

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Section: B Angular Distributions and Multipolarity Determinationssupporting

confidence: 80%

“…The residual interaction of Kuo and Herling [14] was used, but with the modifications applied in Ref. [15][16][17]. In addition, the νi −1 13/2 |H|νi −1…”

Section: Spin-parity Assignmentsmentioning

confidence: 99%

Yrast structure of206Bi: Isomeric states and one-proton-particle, three-neutron-hole excitations

Cieplicka¹,

Maier²,

Fornal³

et al. 2012

Phys. Rev. C

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“…The two-body interaction matrix elements (TBMEs) are from Ref. [25]. They are based on the Kuo-Herling interaction [26] including core polarization, with decisive elements adjusted to the experimental data available at the time.…”

Section: A Theoretical Calculationsmentioning

confidence: 99%

“…As explained in Ref. [19], the Rydström interaction [25] was modified in three points: (i) the (d 3/2 h 11/2 ) 7 − TBME was increased by +135 keV as needed for 206 Hg; (ii) the (s 1/2 d 5/2 ) monopole was increased by +230 keV, which accounts for the 4 + level energy in 204 Pt and the increased blocking of the h 11/2 ⊗ 3 − coupling lowering the effective d 5/2 single hole energy; (iii) following a systematic search of the influence of nondiagonal TBME on the E2 strength evolution from 206 Hg to 204 Pt, the (s 1/2 h 11/2 ;d 3/2 h 11/2 ) 6 − TBME was changed to +160 keV, close to the value for the corresponding 5 − TBME.…”

Section: A Theoretical Calculationsmentioning

confidence: 99%

Isomeric states observed in heavy neutron-rich nuclei populated in the fragmentation of a208Pb beam

et al. 2011

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Heavy neutron-rich nuclei were populated via the fragmentation of a E/A = 1 GeV 208 82 Pb beam. Secondary fragments were separated and identified and subsequently implanted in a passive stopper. By the detection of delayed γ rays, isomeric decays associated with these nuclei have been identified. A total of 49 isomers were detected, with the majority of them observed for the first time. The newly discovered isomers are in 204,205 80 Hg, 201,202,204,205 79 Au, 197,203,204 78 Pt, 195,[199][200][201][202][203] 193,[197][198][199] 196 75 Re, 190,191 74 W, and 189 73 Ta. Possible level schemes are constructed and the structure of the nuclei discussed. To aid the interpretation, shell-model as well as BCS calculations were performed.

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“…This nucleus presents a nice collective band based on the ground state and is characterized by a E(4 + )/E(2 + ) ∼ 2.6 ratio, which is larger than the one measured in 128 Cd. Rydström et al [20] ever, the present information on this nucleus is too scarce to conclude that the collectivity is a consequence of the shell structure and more experimental data are needed to clarify the situation.…”

mentioning

confidence: 87%