Shape coexistence in the neutron-deficient lead region: A systematic study of lifetimes in the even-even Hg188-200 with the GRIFFIN spectrometer at TRIUMF

Olaizola B.; Garnsworthy A. B.; Ali F. A.Andreoiu C.Ball G. C.Bernier N.Bidaman H.Bildstein VBowry M.Caballero-Folch R.Dillmann IHackman G.Garrett P. E.Jigmeddorj B.Kilic A. IMacLean A. D.Patel H. P.Saito Y.Smallcombe J.Svensson C. E.Turko J.Whitmore K.Zidar T.

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Shape coexistence in the neutron-deficient lead region: A systematic study of lifetimes in the even-even Hg188-200 with the GRIFFIN spectrometer at TRIUMF

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Lifetimes of 2(1)(+) and 4(1)(+) states as well as some negative-parity and nonyrast states in Hg188-200 were measured using gamma-gamma electronic fast timing techniques with the LaBr3(Ce) detector array of the GRIFFIN spectrometer. The excited states were populated in the epsilon/beta(+) decay of J(pi) = 7(+)/2(-) 188-200Tl produced at the TRIUMF-ISAC facility. The deduced B(E2) values are compared to different interacting boson model predictions. The precision achieved in this paper over previous ones allows for a meaningful comparison with the different theoretical models of these transitional Hg isotopes, which confirms the onset of state mixing in Hg-190.

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《Physical review, C》 |2019年第2期|共12页
作者
Olaizola B.; Garnsworthy A. B.; Ali F. A.Andreoiu C.Ball G. C.Bernier N.Bidaman H.Bildstein VBowry M.Caballero-Folch R.Dillmann IHackman G.Garrett P. E.Jigmeddorj B.Kilic A. IMacLean A. D.Patel H. P.Saito Y.Smallcombe J.Svensson C. E.Turko J.Whitmore K.Zidar T.;
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TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada;

Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada;

Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada;

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中图分类原子核物理学、高能物理学;
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1. Shape coexistence in neutron-deficient Pb nuclei probed by quadrupole moment measurements [J] . Ionescu-Bujor M, Iordachescu A, Marginean NUr CABucurescu DSuliman GBalabanski DLBrandolini FChmel SDetistov P Physics Letters, B. Nuclear Physics and High Energy Physics . 2007,第3期

机译：Shape coexistence in neutron-deficient Pb nuclei probed by quadrupole moment measurements
2. First observation of excited structures in neutron-deficient Hg-179: evidence for multiple shape coexistence [J] . Kondev FG., Carpenter MP., Janssens RVF.Lister CJ.Abu Saleem K.Ahmad I.Amro H.Caggiano J.Davids CN.Heinz A.Herskind B.Khoo TL. Lauritsen T.Ma WC.Ressler JJ.Reviol W.Riedinger LL.Sarantites DG.Seweryniak D.Siem S.Sonzogni AA.Varmette PG.Wiedenhover I. Physics Letters, B. Nuclear Physics and High Energy Physics . 2002,第4期

机译：First observation of excited structures in neutron-deficient Hg-179: evidence for multiple shape coexistence
3. Persistence of deformed shapes in the neutron-deficient Pb region [J] . Chasman RR., Robledo LM., Egido JL. Physics Letters, B. Nuclear Physics and High Energy Physics . 2001,第4期

机译：Persistence of deformed shapes in the neutron-deficient Pb region

Shape coexistence in the neutron-deficient lead region: A systematic study of lifetimes in the even-even Hg188-200 with the GRIFFIN spectrometer at TRIUMF

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