In-beam 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math>
-ray spectroscopy of the neutron-rich platinum isotope 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Pt</mml:mi><mml:mprescripts /><mml:none /><mml:mn>200</mml:mn></mml:mmultiscripts></mml:math>
 toward the 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>126</mml:mn></mml:mrow></mml:math>
 shell gap

John, P. R.; Mengoni, D.; Modamio, V.; Lunardi, S.; Bazzacco, D.; Gadea, A.; Wheldon, C.; Rodrı́guez, T.; Alexander, T.; Angelis, G. de; Ashwood, N. I.; Barr, M.; Birkenbach, B.; Bizzeti, P. G.; Bizzeti‐Sona, A. M.; Bottoni, S.; Bowry, M.; Bracco, A.; Browne, F.; Bunce, M.; Camera, F.; Corradi, L.; Crespi, F. C. L.; Melon, B.; Farnea, E.; Fioretto, E.; Gottardo, A.; Grente, L.; Hess, H.; Kokalova, Tz.; Körten, W.; Kuşoğlu, A.; Lenzi, S. M.; Leoni, S.; Ljungvall, J.; Menegazzo, R.; Michelagnoli, C.; Mijatović, T.; Montagnoli, G.; Montanari, D.; Napoli, D. R.; Podolyák, Zs.; Pollarolo, G.; Recchia, F.; Reiter, P.; Roberts, O. J.; Şahin, E.; Salsac, M. D.; Scarlassara, F.; Sferrazza, Michele; Söderström, Pär-Anders; Stefanini, A. M.; Szilner, S.; Ur, C. A.; Vogt, A.; Walshe, J.

doi:10.1103/physrevc.95.064321

Cited by 15 publications

(3 citation statements)

References 52 publications

(71 reference statements)

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“…It is found that the slight modifications of proton-proton TBME can provide more precise descriptions of proton hole states in 205 Au and 203 Ir [3,51]. Recent observation of the ground state band of 200 Pt shows that it is a transitional nucleus between the lighter Pt isotopes with γ-unstable properties and N = 126 nucleus 204 Pt with spherical shape [50]. Low-lying states in proton-hole isotopes of Ir, Pt, Au, Hg, and Tl in the 208 Pb region, are investigated through nucleon pair approximation, which agrees well with the observed data [53,54].…”

Section: Low-lying Levelsmentioning

confidence: 99%

Systematic shell-model study on spectroscopic properties in the south region of $^{208}$Pb

Yuan¹,

Shimizu²,

Podolyák³

et al. 2021

Preprint

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Background: The properties of nuclei located in the south region of 208 Pb are important for understanding the r-process nucleosynthesis. While some isomeric states and their spectroscopic properties have been investigated experimentally in neutron-rich Pb, Tl, and Hg isotopes recently, a large portion of the area still remains unreachable.Purpose: We aim to study the properties of nuclei in the south region of 208 Pb systematically, including the binding and excitation energies and electromagnetic properties, in order to predict unknown properties of these nuclei, such as isomerism, utilizing a theoretical model which describes the experimentally known properties precisely. We also address whether the N = 126 shell closure is robust or not when the proton number decreases from 208 Pb.Methods: We performed large-scale shell-model calculations with a new Hamiltonian suggested in the present work. The model space is taken as the five proton orbits within 50 < Z 82 and the thirteen neutron orbits within 82 < N 184. And one-particle one-hole excitation is allowed across the N = 126 gap. The Hamiltonian is constructed by combining the existing Hamiltonians, KHHE (with minor adjustment of its monopole part) and KHPE, and the monopole based universal interaction.Results: The shell-model results well reproduce the experimentally observed binding energies and spectroscopic properties, such as isomerism, core excitation, and electromagnetic properties. Some possible isomeric states in neutron-rich Pb, Tl, and Hg isotopes are predicted with transition energies and half-lives. The N = 126 shell gap is predicted to be robust from Z = 82 down to 68 with minor reduction. We also examine the effective charges and the quenching of the g factors suitable for this region by systematic comparisons between observed and calculated electromagnetic properties.Conclusions: A new Hamiltonian is constructed for nuclei in the south region of 208 Pb, which provides reasonable descriptions on various nuclear properties through comprehensive and systematic studies. The present Hamiltonian and discussions provide fruitful information for future measurements and theoretical investigations in this region, such as the recommended effective charges and g factors, the predicted binding energies, isomeric states, and core-excited states.

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Section: Low-lying Levelsmentioning

confidence: 99%

Systematic shell-model study on spectroscopic properties in the south region of $^{208}$Pb

Yuan¹,

Shimizu²,

Podolyák³

et al. 2021

Preprint

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“…The regions close to Z = 50 and Z = 82 provide unique conditions to study the evolution of nuclear shapes and of collectivity in the vicinity of magic numbers. The lead region, in particular, presents a wide range of phenomena related to the nuclear shape, as for instance shape staggering between odd-and even-mass nuclei [1,2], shape evolution with mass [3][4][5], and shape coexistence [6,7]. The latter is a characteristic feature of finite many-body quantum systems, such as the atomic nucleus, where structures corresponding to different shapes coexist within a similar excitation energy.…”

Section: Introductionmentioning

confidence: 99%

Shape coexistence in neutron-deficient Hg188 investigated via lifetime measurements

Siciliano¹,

Zanon²,

Goasduff³

et al. 2020

Phys. Rev. C

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“…In these experiments information on secondary processes, i.e., neutron evaporation, could also be extracted as illustrated for example in Refs. [13][14][15]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Mass correlation between light and heavy reaction products in multinucleon transfer Au197+Te130 collisions

Galtarossa¹,

Corradi²,

Szilner³

et al. 2018

Phys. Rev. C

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We studied multinucleon transfer reactions in the 197 Au + 130 Te system at E lab = 1.07 GeV by employing the PRISMA magnetic spectrometer coupled to a coincident detector. For each light fragment we constructed, in coincidence, the distribution in mass of the heavy partner of the reaction. With a Monte Carlo method, starting from the binary character of the reaction, we simulated the de-excitation process of the produced heavy fragments to be able to understand their final mass distribution. The total cross sections for pure neutron transfer channels have also been extracted and compared with calculations performed with the GRAZING code.

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In-beam γ -ray spectroscopy of the neutron-rich platinum isotope Pt200 toward the N=126 shell gap

Cited by 15 publications

References 52 publications

Systematic shell-model study on spectroscopic properties in the south region of $^{208}$Pb

Systematic shell-model study on spectroscopic properties in the south region of $^{208}$Pb

Shape coexistence in neutron-deficient Hg188 investigated via lifetime measurements

Mass correlation between light and heavy reaction products in multinucleon transfer Au197+Te130 collisions

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