Charge radii, moments, and masses of mercury isotopes across the N=126 shell closure

Thomas Day Goodacre; A.V. Afanasjev; Anatoly (A.E.) Barzakh; L. Nies; Bruce A Marsh; Simon Sels; U. Perera; P. Ring; Frank Wienholtz; Andrei N. Andreyev; Piet Van Duppen; Numa A. Althubiti; Boris Andel; Dimitar Atanasov; Ricardo Manuel Dos Santos Augusto; Jonathan Billowes; Klaus Blaum; Thomas Elias Cocolios; Cubiss James G.; Gregory James Farooq-Smith; Dmitry V. Fedorov; Valentin N. Fedosseev; Kieran T. Flanagan; Liam Paul Gaffney; Lars Ghys; Alexander Gottberg; Mark Huyse; S. Kreim; João Pedro Fernandes Pinto Ramos

doi:10.1103/PhysRevC.104.054322

Charge radii, moments, and masses of mercury isotopes across the N=126 shell closure

Thomas Day Goodacre, A.V. Afanasjev, Anatoly (A.E.) Barzakh, L. Nies, Bruce A Marsh, Simon Sels, U. Perera, P. Ring, Frank Wienholtz, Andrei N. Andreyev, Piet Van Duppen, Numa A. Althubiti, Boris Andel, Dimitar Atanasov, Ricardo Manuel Dos Santos Augusto, Jonathan Billowes, Klaus Blaum, Thomas Elias Cocolios, Cubiss James G., Gregory James Farooq-SmithDmitry V. Fedorov, Valentin N. Fedosseev, Kieran T. Flanagan, Liam Paul Gaffney, Lars Ghys, Alexander Gottberg, Mark Huyse, S. Kreim, João Pedro Fernandes Pinto Ramos

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Abstract

Combining laser spectroscopy in a Versatile Arc Discharge and Laser Ion Source (VADLIS) with Penning-trap mass spectrometry at the CERN-ISOLDE facility, this work reports on mean-square charge radii of neutron-rich mercury isotopes across the N=126 shell closure, the electromagnetic moments of 207Hg, and more precise mass values of 206–208Hg. The odd-even staggering (OES) of the mean square charge radii and the kink at N=126 are analyzed within the framework of covariant density functional theory (CDFT), with comparisons between different functionals to investigate the dependence of the results on the underlying single-particle structure. The observed features are defined predominantly in the particle-hole channel in CDFT, since both are present in the calculations without pairing. However, the magnitude of the kink is still affected by the occupation of the ν1i11/2 and ν2g9/2 orbitals with a dependence on the relative energies as well as pairing.

Original language	English
Article number	054322
Pages (from-to)	1-18
Number of pages	18
Journal	Physical Review C
Volume	104
DOIs	https://doi.org/10.1103/PhysRevC.104.054322
State	Published - 30 Nov 2021

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Day Goodacre, T., Afanasjev, A. V., Barzakh, A., Nies, L., Marsh, B. A., Sels, S., Perera, U., Ring, P., Wienholtz, F., Andreyev, A. N., Van Duppen, P., Althubiti, N. A., Andel, B., Atanasov, D., Augusto, R. M. D. S., Billowes, J., Blaum, K., Cocolios, T. E., James G., C., ... Fernandes Pinto Ramos, J. P. (2021). Charge radii, moments, and masses of mercury isotopes across the N=126 shell closure. Physical Review C, 104, 1-18. Article 054322. https://doi.org/10.1103/PhysRevC.104.054322

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title = "Charge radii, moments, and masses of mercury isotopes across the N=126 shell closure",

abstract = "Combining laser spectroscopy in a Versatile Arc Discharge and Laser Ion Source (VADLIS) with Penning-trap mass spectrometry at the CERN-ISOLDE facility, this work reports on mean-square charge radii of neutron-rich mercury isotopes across the N=126 shell closure, the electromagnetic moments of 207Hg, and more precise mass values of 206–208Hg. The odd-even staggering (OES) of the mean square charge radii and the kink at N=126 are analyzed within the framework of covariant density functional theory (CDFT), with comparisons between different functionals to investigate the dependence of the results on the underlying single-particle structure. The observed features are defined predominantly in the particle-hole channel in CDFT, since both are present in the calculations without pairing. However, the magnitude of the kink is still affected by the occupation of the ν1i11/2 and ν2g9/2 orbitals with a dependence on the relative energies as well as pairing.",

keywords = "Binding energy & masses, Nuclear structure & decays, Rare & new isotopes, Spectroscopic factors & electromagnetic moments, 190 ≤ A ≤ 219, Electric moment, Magnetic moment, Nuclear binding, Mass spectrometry, Nuclear density functional theory, Photoionization, Radioactive beams",

author = "{Day Goodacre}, Thomas and A.V. Afanasjev and Barzakh, {Anatoly (A.E.)} and L. Nies and Marsh, {Bruce A} and Simon Sels and U. Perera and P. Ring and Frank Wienholtz and Andreyev, {Andrei N.} and {Van Duppen}, Piet and Althubiti, {Numa A.} and Boris Andel and Dimitar Atanasov and Augusto, {Ricardo Manuel Dos Santos} and Jonathan Billowes and Klaus Blaum and Cocolios, {Thomas Elias} and {James G.}, Cubiss 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 Alexander Gottberg and Mark Huyse and S. Kreim and {Fernandes Pinto Ramos}, {Jo{\~a}o Pedro}",

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year = "2021",

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doi = "10.1103/PhysRevC.104.054322",

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Day Goodacre, T, Afanasjev, AV, Barzakh, A, Nies, L, Marsh, BA, Sels, S, Perera, U, Ring, P, Wienholtz, F, Andreyev, AN, Van Duppen, P, Althubiti, NA, Andel, B, Atanasov, D, Augusto, RMDS, Billowes, J, Blaum, K, Cocolios, TE, James G., C, Farooq-Smith, GJ, Fedorov, DV, Fedosseev, VN, Flanagan, KT, Gaffney, LP, Ghys, L, Gottberg, A, Huyse, M, Kreim, S & Fernandes Pinto Ramos, JP 2021, 'Charge radii, moments, and masses of mercury isotopes across the N=126 shell closure', Physical Review C, vol. 104, 054322, pp. 1-18. https://doi.org/10.1103/PhysRevC.104.054322

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AU - Day Goodacre, Thomas

AU - Afanasjev, A.V.

AU - Barzakh, Anatoly (A.E.)

AU - Nies, L.

AU - Marsh, Bruce A

AU - Sels, Simon

AU - Perera, U.

AU - Ring, P.

AU - Wienholtz, Frank

AU - Andreyev, Andrei N.

AU - Van Duppen, Piet

AU - Althubiti, Numa A.

AU - Andel, Boris

AU - Atanasov, Dimitar

AU - Augusto, Ricardo Manuel Dos Santos

AU - Billowes, Jonathan

AU - Blaum, Klaus

AU - Cocolios, Thomas Elias

AU - James G., Cubiss

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 - Gottberg, Alexander

AU - Huyse, Mark

AU - Kreim, S.

AU - Fernandes Pinto Ramos, João Pedro

N1 - Score=10

PY - 2021/11/30

Y1 - 2021/11/30

N2 - Combining laser spectroscopy in a Versatile Arc Discharge and Laser Ion Source (VADLIS) with Penning-trap mass spectrometry at the CERN-ISOLDE facility, this work reports on mean-square charge radii of neutron-rich mercury isotopes across the N=126 shell closure, the electromagnetic moments of 207Hg, and more precise mass values of 206–208Hg. The odd-even staggering (OES) of the mean square charge radii and the kink at N=126 are analyzed within the framework of covariant density functional theory (CDFT), with comparisons between different functionals to investigate the dependence of the results on the underlying single-particle structure. The observed features are defined predominantly in the particle-hole channel in CDFT, since both are present in the calculations without pairing. However, the magnitude of the kink is still affected by the occupation of the ν1i11/2 and ν2g9/2 orbitals with a dependence on the relative energies as well as pairing.

AB - Combining laser spectroscopy in a Versatile Arc Discharge and Laser Ion Source (VADLIS) with Penning-trap mass spectrometry at the CERN-ISOLDE facility, this work reports on mean-square charge radii of neutron-rich mercury isotopes across the N=126 shell closure, the electromagnetic moments of 207Hg, and more precise mass values of 206–208Hg. The odd-even staggering (OES) of the mean square charge radii and the kink at N=126 are analyzed within the framework of covariant density functional theory (CDFT), with comparisons between different functionals to investigate the dependence of the results on the underlying single-particle structure. The observed features are defined predominantly in the particle-hole channel in CDFT, since both are present in the calculations without pairing. However, the magnitude of the kink is still affected by the occupation of the ν1i11/2 and ν2g9/2 orbitals with a dependence on the relative energies as well as pairing.

KW - Binding energy & masses

KW - Nuclear structure & decays

KW - Rare & new isotopes

KW - Spectroscopic factors & electromagnetic moments

KW - 190 ≤ A ≤ 219

KW - Electric moment

KW - Magnetic moment

KW - Nuclear binding

KW - Mass spectrometry

KW - Nuclear density functional theory

KW - Photoionization

KW - Radioactive beams

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