Shape staggering of midshell mercury isotopes from in-source laser spectroscopy compared with density-functional-theory and Monte Carlo shell-model calculations

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Shape staggering of midshell mercury isotopes from in-source laser spectroscopy compared with density-functional-theory and Monte Carlo shell-model calculations. / Sels, Simon; Day Goodacre, Thomas; Marsh, Bruce A; Pastore, Alessandro; Ryssens, W.; Tsunoda, Yusuke; Althubiti, Numa A.; Andel, B.; Andreyev, Andrei N.; Atanasov, Dimitar; Barzakh, A. E.; Bender, Michael; Billowes, Johathan; Blaum, Klaus; Cocolios, Thomas Elias; James G., Cubiss; Dobaczewski, Jacek; Farooq-Smith, Gregory James; Fedorov, Dmitry V.; Fedosseev, Valentin N.; Flanagan, Kieran T.; Gaffney, Liam Paul; Ghys, Lars; Heenen, Paul-Henri.

In: Physical Review C, Vol. 99, 044306, 12.04.2019, p. 1-17.

Research output: Contribution to journalArticle

Harvard

Sels, S, Day Goodacre, T, Marsh, BA, Pastore, A, Ryssens, W, Tsunoda, Y, Althubiti, NA, Andel, B, Andreyev, AN, Atanasov, D, Barzakh, AE, Bender, M, Billowes, J, Blaum, K, Cocolios, TE, James G., C, Dobaczewski, J, Farooq-Smith, GJ, Fedorov, DV, Fedosseev, VN, Flanagan, KT, Gaffney, LP, Ghys, L & Heenen, P-H 2019, 'Shape staggering of midshell mercury isotopes from in-source laser spectroscopy compared with density-functional-theory and Monte Carlo shell-model calculations' Physical Review C, vol 99, 044306, pp. 1-17. DOI: 10.1103/PhysRevC.99.044306

APA

Sels, S., Day Goodacre, T., Marsh, B. A., Pastore, A., Ryssens, W., Tsunoda, Y., ... Heenen, P-H. (2019). Shape staggering of midshell mercury isotopes from in-source laser spectroscopy compared with density-functional-theory and Monte Carlo shell-model calculations. Physical Review C, 99, 1-17. [044306]. DOI: 10.1103/PhysRevC.99.044306

Vancouver

Sels S, Day Goodacre T, Marsh BA, Pastore A, Ryssens W, Tsunoda Y et al. Shape staggering of midshell mercury isotopes from in-source laser spectroscopy compared with density-functional-theory and Monte Carlo shell-model calculations. Physical Review C. 2019 Apr 12;99:1-17. 044306. Available from, DOI: 10.1103/PhysRevC.99.044306

Author

Sels, Simon; Day Goodacre, Thomas; Marsh, Bruce A; Pastore, Alessandro; Ryssens, W.; Tsunoda, Yusuke; Althubiti, Numa A.; Andel, B.; Andreyev, Andrei N.; Atanasov, Dimitar; Barzakh, A. E.; Bender, Michael; Billowes, Johathan; Blaum, Klaus; Cocolios, Thomas Elias; James G., Cubiss; Dobaczewski, Jacek; Farooq-Smith, Gregory James; Fedorov, Dmitry V.; Fedosseev, Valentin N.; Flanagan, Kieran T.; Gaffney, Liam Paul; Ghys, Lars; Heenen, Paul-Henri / Shape staggering of midshell mercury isotopes from in-source laser spectroscopy compared with density-functional-theory and Monte Carlo shell-model calculations.

In: Physical Review C, Vol. 99, 044306, 12.04.2019, p. 1-17.

Research output: Contribution to journalArticle

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@article{80815aa783004180957257d2d3bb29c9,
title = "Shape staggering of midshell mercury isotopes from in-source laser spectroscopy compared with density-functional-theory and Monte Carlo shell-model calculations",
keywords = "ISOLDE, laser spectroscopy, shell model, mercury",
author = "Simon Sels and {Day Goodacre}, Thomas and Marsh, {Bruce A} and Alessandro Pastore and W. Ryssens and Yusuke Tsunoda and Althubiti, {Numa A.} and B. Andel and Andreyev, {Andrei N.} and Dimitar Atanasov and Barzakh, {A. E.} and Michael Bender and Johathan Billowes and Klaus Blaum and Cocolios, {Thomas Elias} and {James G.}, Cubiss and Jacek Dobaczewski and Farooq-Smith, {Gregory James} and Fedorov, {Dmitry V.} and Fedosseev, {Valentin N.} and Flanagan, {Kieran T.} and Gaffney, {Liam Paul} and Lars Ghys and Paul-Henri Heenen",
note = "Score=10",
year = "2019",
month = "4",
doi = "10.1103/PhysRevC.99.044306",
volume = "99",
pages = "1--17",
journal = "Physical Review C",
issn = "0556-2813",
publisher = "APS - American Physical Society",

}

RIS - Download

TY - JOUR

T1 - Shape staggering of midshell mercury isotopes from in-source laser spectroscopy compared with density-functional-theory and Monte Carlo shell-model calculations

AU - Sels,Simon

AU - Day Goodacre,Thomas

AU - Marsh,Bruce A

AU - Pastore,Alessandro

AU - Ryssens,W.

AU - Tsunoda,Yusuke

AU - Althubiti,Numa A.

AU - Andel,B.

AU - Andreyev,Andrei N.

AU - Atanasov,Dimitar

AU - Barzakh,A. E.

AU - Bender,Michael

AU - Billowes,Johathan

AU - Blaum,Klaus

AU - Cocolios,Thomas Elias

AU - James G.,Cubiss

AU - Dobaczewski,Jacek

AU - Farooq-Smith,Gregory James

AU - Fedorov,Dmitry V.

AU - Fedosseev,Valentin N.

AU - Flanagan,Kieran T.

AU - Gaffney,Liam Paul

AU - Ghys,Lars

AU - Heenen,Paul-Henri

N1 - Score=10

PY - 2019/4/12

Y1 - 2019/4/12

N2 - Neutron-deficient 177−185Hg isotopes were studied using in-source laser resonance-ionization spectroscopy at the CERN-ISOLDE radioactive ion-beam facility in an experiment combining different detection methods tailored to the studied isotopes. These include either α-decay tagging or multireflection time-of-flight gating for isotope identification. The endpoint of the odd-even nuclear shape staggering in mercury was observed directly by measuring for the first time the isotope shifts and hyperfine structures of 177−180Hg. Changes in the meansquare charge radii for all mentioned isotopes, magnetic dipole, and electric quadrupole moments of the odd-A isotopes and arguments in favor of I = 7/2 spin assignment for 177,179Hg were deduced. Experimental results are compared with density functional theory (DFT) and Monte Carlo shell model (MCSM) calculations. DFT calculations using Skyrme parametrizations predict a jump in the charge radius around the neutron N = 104 midshell, with an odd-even staggering pattern related to the coexistence of nearly degenerate oblate and prolate minima. This near-degeneracy is highly sensitive to many aspects of the effective interaction, a fact that renders perfect agreement with experiments out of reach for current functionals. Despite this inherent difficulty, the SLy5s1 and a modified UNEDF1SO parametrization predict a qualitatively correct staggering that is off by two neutron numbers. MCSM calculations of states with the experimental spins and parities show good agreement for both electromagnetic moments and the observed charge radii. A clear mechanism for the origin of shape staggering within this context is identified: a substantial change in occupancy of the proton πh9/2 and neutron νi13/2 orbitals.

AB - Neutron-deficient 177−185Hg isotopes were studied using in-source laser resonance-ionization spectroscopy at the CERN-ISOLDE radioactive ion-beam facility in an experiment combining different detection methods tailored to the studied isotopes. These include either α-decay tagging or multireflection time-of-flight gating for isotope identification. The endpoint of the odd-even nuclear shape staggering in mercury was observed directly by measuring for the first time the isotope shifts and hyperfine structures of 177−180Hg. Changes in the meansquare charge radii for all mentioned isotopes, magnetic dipole, and electric quadrupole moments of the odd-A isotopes and arguments in favor of I = 7/2 spin assignment for 177,179Hg were deduced. Experimental results are compared with density functional theory (DFT) and Monte Carlo shell model (MCSM) calculations. DFT calculations using Skyrme parametrizations predict a jump in the charge radius around the neutron N = 104 midshell, with an odd-even staggering pattern related to the coexistence of nearly degenerate oblate and prolate minima. This near-degeneracy is highly sensitive to many aspects of the effective interaction, a fact that renders perfect agreement with experiments out of reach for current functionals. Despite this inherent difficulty, the SLy5s1 and a modified UNEDF1SO parametrization predict a qualitatively correct staggering that is off by two neutron numbers. MCSM calculations of states with the experimental spins and parities show good agreement for both electromagnetic moments and the observed charge radii. A clear mechanism for the origin of shape staggering within this context is identified: a substantial change in occupancy of the proton πh9/2 and neutron νi13/2 orbitals.

KW - ISOLDE

KW - laser spectroscopy

KW - shell model

KW - mercury

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/33753042

U2 - 10.1103/PhysRevC.99.044306

DO - 10.1103/PhysRevC.99.044306

M3 - Article

VL - 99

SP - 1

EP - 17

JO - Physical Review C

T2 - Physical Review C

JF - Physical Review C

SN - 0556-2813

M1 - 044306

ER -

ID: 5102270