The?- and?-decay of187Pb

Μisaelides, P.; Tidemand-Petersson, P.; Schrewe, U.J.; Grant, I. S.; Kirchner, R.; Klepper, O.; Malcolm, I C; Nolan, P. J.; Roeckl, E.; Schmidt‐Ott, W. D.; Wood, J. L.

doi:10.1007/bf01416294

Cited by 28 publications

(2 citation statements)

References 16 publications

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“…181,183,185 Hg) [10,11] have a strongly prolate ground state. However a coexisting weakly (oblate) deformed i 13/2 , isomer has also been confirmed in 183,185 Hg and other heavier odd-A Hg isotopes [14,15] in the experimental studies. Above A = 185, the odd-A Hg isotopes like 187,189 Hg show transitional character.…”

Section: Introductionsupporting

confidence: 54%

Lifetime measurements in the yrast band of ¹⁸⁷Hg

Bhushan,

Pandey,

Rohilla

et al. 2024

Phys. Scr.

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Lifetimes of excited nuclear states in 187Hg have been measured using the 159Tb (32S, p3n)187Hg reaction at a beam energy of 154 MeV at the Inter University Accelerator Center, Delhi. In the experiment, the lifetimes of the five lowest yrast states have been determined using the recoil distance Doppler-shift (RDM) method. The extracted transition quadrupole moments show a sharp increase with increasing level spin, indicating a major shape transition happening in this nucleus. For a better insight into the predicted shape coexistence picture in 187Hg nucleus, the experimental results are compared with the results of the total Routhian surface calculations. The results indicate the shifting of deformed structures from weakly prolate at low-spins to strongly prolate at high spins in 187Hg nucleus.

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Section: Introductionsupporting

confidence: 54%

Lifetime measurements in the yrast band of ¹⁸⁷Hg

Bhushan,

Pandey,

Rohilla

et al. 2024

Phys. Scr.

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“…The approximate numbers of counts (DSSD only) for the full-energy α peaks of 188 Bi g,m and 189 Bi are shown above each peak. The structure at 6220 to 6264 keV corresponds to the partial or full energy summing in the DSSD of the 6194-keV α decay of 187 Pb g and ≈54-64 keV L/M-shell conversion electrons (CEs) resulting from the strong conversion of the known coincident 67-keV E 2 transition [41].…”

Section: A the Calibration Of The Dssd And Dssd + Sibox Energy Spectramentioning

confidence: 99%

Identification of excited states in Bi188 and Po188

Zhang¹,

Andreyev²,

Liu³

et al. 2022

Phys. Rev. C

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The neutron-deficient 188 Bi and 188 Po isotopes have been studied by γ -ray spectroscopy using the recoil-decay tagging technique with the Argonne Gas-Filled Analyzer. A new 0.25(5)-μs isomeric state and a prompt cascade formed by 319-, 366-, and 462-keV γ rays have been established on top of the (10 − ) α-decaying isomer in 188 Bi. The first excited (2 + ) state in 188 Po was identified, its excitation energy of 242(2) keV continues the nearly constant trend for the first 2 + states in 190,192,194 Po. The state is most likely a member of a prolate rotational band built on the ground state, albeit mixing with other coexisting configurations cannot be excluded. The new results obtained in the present work provide new information to shape coexistence in bismuth and polonium isotopes near the neutron midshell at N = 104. In this mass region, a reduction in the prompt γ -ray yield obtained with recoil decay tagging was observed for a few nuclides, and the possible reasons are presented.

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