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Day Goodacre T, Afanasjev AV, Barzakh AE, Marsh BA, Sels S, Ring P, Nakada H, Andreyev AN, Van Duppen P, Althubiti NA, Andel B, Atanasov D, Billowes J, Blaum K, Cocolios TE, Cubiss JG, Farooq-Smith GJ, Fedorov DV, Fedosseev VN, Flanagan KT, Gaffney LP, Ghys L, Huyse M, Kreim S, Lunney D, Lynch KM, Manea V, Martinez Palenzuela Y, Molkanov PL, Rosenbusch M, Rossel RE, Rothe S, Schweikhard L, Seliverstov MD, Spagnoletti P, Van Beveren C, Veinhard M, Verstraelen E, Welker A, Wendt K, Wienholtz F, Wolf RN, Zadvornaya A, Zuber K. Laser Spectroscopy of Neutron-Rich ^{207,208}Hg Isotopes: Illuminating the Kink and Odd-Even Staggering in Charge Radii across the N=126 Shell Closure. PHYSICAL REVIEW LETTERS 2021; 126:032502. [PMID: 33543945 DOI: 10.1103/physrevlett.126.032502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 11/17/2020] [Accepted: 12/15/2020] [Indexed: 06/12/2023]
Abstract
The mean-square charge radii of ^{207,208}Hg (Z=80, N=127, 128) have been studied for the first time and those of ^{202,203,206}Hg (N=122, 123, 126) remeasured by the application of in-source resonance-ionization laser spectroscopy at ISOLDE (CERN). The characteristic kink in the charge radii at the N=126 neutron shell closure has been revealed, providing the first information on its behavior below the Z=82 proton shell closure. A theoretical analysis has been performed within relativistic Hartree-Bogoliubov and nonrelativistic Hartree-Fock-Bogoliubov approaches, considering both the new mercury results and existing lead data. Contrary to previous interpretations, it is demonstrated that both the kink at N=126 and the odd-even staggering (OES) in its vicinity can be described predominately at the mean-field level and that pairing does not need to play a crucial role in their origin. A new OES mechanism is suggested, related to the staggering in the occupation of the different neutron orbitals in odd- and even-A nuclei, facilitated by particle-vibration coupling for odd-A nuclei.
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Affiliation(s)
- T Day Goodacre
- The University of Manchester, School of Physics and Astronomy, Oxford Road, Manchester M13 9PL, United Kingdom
- CERN, CH-1211 Geneva 23, Switzerland
- TRIUMF, Vancouver V6T 2A3, Canada
| | - A V Afanasjev
- Department of Physics and Astronomy, Mississippi State University, Mississippi 39762, USA
| | - A E Barzakh
- Petersburg Nuclear Physics Institute, NRC Kurchatov Institute, Gatchina 188300, Russia
| | - B A Marsh
- CERN, CH-1211 Geneva 23, Switzerland
| | - S Sels
- CERN, CH-1211 Geneva 23, Switzerland
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - P Ring
- Fakultät für Physik, Technische Universität München, D-85748 Garching, Germany
| | - H Nakada
- Department of Physics, Graduate School of Science, Chiba University, Yayoi-cho, I-33, Inage, Chiba 263-8522, Japan
| | - A N Andreyev
- Department of Physics, University of York, York YO10 5DD, United Kingdom
- Advanced Science Research Center (ASRC), Japan Atomic Energy Agency (JAEA), Tokai-mura, Japan
| | - P Van Duppen
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - N A Althubiti
- The University of Manchester, School of Physics and Astronomy, Oxford Road, Manchester M13 9PL, United Kingdom
- Physics Department, Faculty of Science, Jouf University, Aljouf P.O. Box 2014, Saudi Arabia
| | - B Andel
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
- Department of Nuclear Physics and Biophysics, Comenius University in Bratislava, 84248 Bratislava, Slovakia
| | - D Atanasov
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - J Billowes
- The University of Manchester, School of Physics and Astronomy, Oxford Road, Manchester M13 9PL, United Kingdom
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - T E Cocolios
- The University of Manchester, School of Physics and Astronomy, Oxford Road, Manchester M13 9PL, United Kingdom
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - J G Cubiss
- Department of Physics, University of York, York YO10 5DD, United Kingdom
| | - G J Farooq-Smith
- The University of Manchester, School of Physics and Astronomy, Oxford Road, Manchester M13 9PL, United Kingdom
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - D V Fedorov
- Petersburg Nuclear Physics Institute, NRC Kurchatov Institute, Gatchina 188300, Russia
| | | | - K T Flanagan
- The University of Manchester, School of Physics and Astronomy, Oxford Road, Manchester M13 9PL, United Kingdom
- The Photon Science Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - L P Gaffney
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
- School of Computing, Engineering, and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, United Kingdom
| | - L Ghys
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
- Belgian Nuclear Research Center SCK CEN, Boeretang 200, B-2400 Mol, Belgium
| | - M Huyse
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - S Kreim
- CERN, CH-1211 Geneva 23, Switzerland
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - D Lunney
- CSNSM-IN2P3, Université de Paris Sud, 91405 Orsay, France
| | - K M Lynch
- The University of Manchester, School of Physics and Astronomy, Oxford Road, Manchester M13 9PL, United Kingdom
- CERN, CH-1211 Geneva 23, Switzerland
| | - V Manea
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Y Martinez Palenzuela
- CERN, CH-1211 Geneva 23, Switzerland
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - P L Molkanov
- Petersburg Nuclear Physics Institute, NRC Kurchatov Institute, Gatchina 188300, Russia
| | - M Rosenbusch
- Universität Greifswald, Institut für Physik, 17487 Greifswald, Germany
| | - R E Rossel
- CERN, CH-1211 Geneva 23, Switzerland
- Institut für Physik, Johannes Gutenberg-Universität, D-55099 Mainz, Germany
| | - S Rothe
- CERN, CH-1211 Geneva 23, Switzerland
| | - L Schweikhard
- Universität Greifswald, Institut für Physik, 17487 Greifswald, Germany
| | - M D Seliverstov
- Petersburg Nuclear Physics Institute, NRC Kurchatov Institute, Gatchina 188300, Russia
| | - P Spagnoletti
- School of Computing, Engineering, and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, United Kingdom
| | - C Van Beveren
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | | | - E Verstraelen
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - A Welker
- CERN, CH-1211 Geneva 23, Switzerland
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden 01069, Germany
| | - K Wendt
- Institut für Physik, Johannes Gutenberg-Universität, D-55099 Mainz, Germany
| | - F Wienholtz
- CERN, CH-1211 Geneva 23, Switzerland
- Universität Greifswald, Institut für Physik, 17487 Greifswald, Germany
| | - R N Wolf
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- Universität Greifswald, Institut für Physik, 17487 Greifswald, Germany
| | - A Zadvornaya
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - K Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden 01069, Germany
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Berengut JC, Budker D, Delaunay C, Flambaum VV, Frugiuele C, Fuchs E, Grojean C, Harnik R, Ozeri R, Perez G, Soreq Y. Probing New Long-Range Interactions by Isotope Shift Spectroscopy. PHYSICAL REVIEW LETTERS 2018; 120:091801. [PMID: 29547329 DOI: 10.1103/physrevlett.120.091801] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 09/20/2017] [Indexed: 06/08/2023]
Abstract
We explore a method to probe new long- and intermediate-range interactions using precision atomic isotope shift spectroscopy. We develop a formalism to interpret linear King plots as bounds on new physics with minimal theory inputs. We focus only on bounding the new physics contributions that can be calculated independently of the standard model nuclear effects. We apply our method to existing Ca^{+} data and project its sensitivity to conjectured new bosons with spin-independent couplings to the electron and the neutron using narrow transitions in other atoms and ions, specifically, Sr and Yb. Future measurements are expected to improve the relative precision by 5 orders of magnitude, and they can potentially lead to an unprecedented sensitivity for bosons within the 0.3 to 10 MeV mass range.
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Affiliation(s)
- Julian C Berengut
- School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Dmitry Budker
- Helmholtz-Institut Mainz, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
- Physics Department, University of California, Berkeley 94720-7300, USA
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Cédric Delaunay
- Laboratoire d'Annecy-le-Vieux de Physique Théorique LAPTh, CNRS-Université Savoie Mont Blanc, BP 110, F-74941 Annecy-le-Vieux, France
| | - Victor V Flambaum
- School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Claudia Frugiuele
- Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Elina Fuchs
- Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Christophe Grojean
- DESY, D-22607 Hamburg, Germany
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - Roni Harnik
- Theoretical Physics Department, Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - Roee Ozeri
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Gilad Perez
- Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Yotam Soreq
- Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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