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Karthein J, Udrescu SM, Moroch SB, Belosevic I, Blaum K, Borschevsky A, Chamorro Y, DeMille D, Dilling J, Garcia Ruiz RF, Hutzler NR, Pašteka LF, Ringle R. Electroweak Nuclear Properties from Single Molecular Ions in a Penning Trap. PHYSICAL REVIEW LETTERS 2024; 133:033003. [PMID: 39094143 DOI: 10.1103/physrevlett.133.033003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/31/2024] [Accepted: 04/18/2024] [Indexed: 08/04/2024]
Abstract
We present a novel technique to probe electroweak nuclear properties by measuring parity violation (PV) in single molecular ions in a Penning trap. The trap's strong magnetic field Zeeman shifts opposite-parity rotational and hyperfine molecular states into near degeneracy. The weak interaction-induced mixing between these degenerate states can be larger than in atoms by more than 12 orders of magnitude, thereby vastly amplifying PV effects. The single molecule sensitivity would be suitable for applications to nuclei across the nuclear chart, including rare and unstable nuclei.
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2
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Heiße F, Door M, Sailer T, Filianin P, Herkenhoff J, König CM, Kromer K, Lange D, Morgner J, Rischka A, Schweiger C, Tu B, Novikov YN, Eliseev S, Sturm S, Blaum K. High-Precision Determination of g Factors and Masses of ^{20}Ne^{9+} and ^{22}Ne^{9+}. PHYSICAL REVIEW LETTERS 2023; 131:253002. [PMID: 38181339 DOI: 10.1103/physrevlett.131.253002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/11/2023] [Accepted: 09/05/2023] [Indexed: 01/07/2024]
Abstract
We present the measurements of individual bound electron g factors of ^{20}Ne^{9+} and ^{22}Ne^{9+} on the relative level of 0.1 parts per billion. The comparison with theory represents the most stringent test of bound-state QED in strong electric fields. A dedicated mass measurement results in m(^{20}Ne)=19.992 440 168 77(9) u, which improves the current literature value by a factor of 18, disagrees by 4 standard deviations, and represents the most precisely measured mass value in atomic mass units. Together, these measurements yield an electron mass on the relative level of 0.1 ppb with m_{e}=5.485 799 090 99(59)×10^{-4} u as well as a factor of seven improved m(^{22}Ne)=21.991 385 098 2(26) u.
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Affiliation(s)
- F Heiße
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M Door
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - T Sailer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - P Filianin
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - J Herkenhoff
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - C M König
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - K Kromer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - D Lange
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - J Morgner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A Rischka
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - Ch Schweiger
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - B Tu
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - Y N Novikov
- Kurchatov Institute-PNPI, 188300 Gatchina, Russia
- Saint Petersburg State University, 199034 Saint Petersburg, Russia
| | - S Eliseev
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - S Sturm
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
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3
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Kromer K, Lyu C, Door M, Filianin P, Harman Z, Herkenhoff J, Indelicato P, Keitel CH, Lange D, Novikov YN, Schweiger C, Eliseev S, Blaum K. Observation of a Low-Lying Metastable Electronic State in Highly Charged Lead by Penning-Trap Mass Spectrometry. PHYSICAL REVIEW LETTERS 2023; 131:223002. [PMID: 38101362 DOI: 10.1103/physrevlett.131.223002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 10/09/2023] [Accepted: 10/17/2023] [Indexed: 12/17/2023]
Abstract
Highly charged ions (HCIs) offer many opportunities for next-generation clock research due to the vast landscape of available electronic transitions in different charge states. The development of extreme ultraviolet frequency combs has enabled the search for clock transitions based on shorter wavelengths in HCIs. However, without initial knowledge of the energy of the clock states, these narrow transitions are difficult to be probed by lasers. In this Letter, we provide experimental observation and theoretical calculation of a long-lived electronic state in Nb-like Pb^{41+} that could be used as a clock state. With the mass spectrometer PENTATRAP, the excitation energy of this metastable state is directly determined as a mass difference at an energy of 31.2(8) eV, corresponding to one of the most precise relative mass determinations to date with a fractional uncertainty of 4×10^{-12}. This experimental result agrees within 1σ with two partially different ab initio multiconfiguration Dirac-Hartree-Fock calculations of 31.68(13) eV and 31.76(35) eV, respectively. With a calculated lifetime of 26.5(5.3) days, the transition from this metastable state to the ground state bears a quality factor of 1.1×10^{23} and allows for the construction of a HCI clock with a fractional frequency instability of <10^{-19}/sqrt[τ].
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Affiliation(s)
- Kathrin Kromer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - Chunhai Lyu
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - Menno Door
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - Pavel Filianin
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - Zoltán Harman
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - Jost Herkenhoff
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - Paul Indelicato
- Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL Research University, Collège de France, Paris, France
| | | | - Daniel Lange
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - Yuri N Novikov
- Department of Physics, St Petersburg State University, St. Petersburg 198504, Russia
- NRC "Kurchatov Institute"-Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | | | - Sergey Eliseev
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - Klaus Blaum
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
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4
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Wiesinger M, Stuhlmann F, Bohman M, Micke P, Will C, Yildiz H, Abbass F, Arndt BP, Devlin JA, Erlewein S, Fleck M, Jäger JI, Latacz BM, Schweitzer D, Umbrazunas G, Wursten E, Blaum K, Matsuda Y, Mooser A, Quint W, Soter A, Walz J, Smorra C, Ulmer S. Trap-integrated fluorescence detection with silicon photomultipliers for sympathetic laser cooling in a cryogenic Penning trap. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2023; 94:123202. [PMID: 38109470 DOI: 10.1063/5.0170629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 11/23/2023] [Indexed: 12/20/2023]
Abstract
We present a fluorescence-detection system for laser-cooled 9Be+ ions based on silicon photomultipliers (SiPMs) operated at 4 K and integrated into our cryogenic 1.9 T multi-Penning-trap system. Our approach enables fluorescence detection in a hermetically sealed cryogenic Penning-trap chamber with limited optical access, where state-of-the-art detection using a telescope and photomultipliers at room temperature would be extremely difficult. We characterize the properties of the SiPM in a cryocooler at 4 K, where we measure a dark count rate below 1 s-1 and a detection efficiency of 2.5(3)%. We further discuss the design of our cryogenic fluorescence-detection trap and analyze the performance of our detection system by fluorescence spectroscopy of 9Be+ ion clouds during several runs of our sympathetic laser-cooling experiment.
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Affiliation(s)
- M Wiesinger
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - F Stuhlmann
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
| | - M Bohman
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - P Micke
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
| | - C Will
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - H Yildiz
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
| | - F Abbass
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
| | - B P Arndt
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J A Devlin
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Erlewein
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Fleck
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
| | - J I Jäger
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - B M Latacz
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Schweitzer
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
| | - G Umbrazunas
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Eidgenössische Technische Hochschule Zürich, John-von-Neumann-Weg 9, 8093 Zürich, Switzerland
| | - E Wursten
- CERN, Esplanade des Particules 1, 1217 Meyrin, Switzerland
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Y Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
| | - A Mooser
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - W Quint
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - A Soter
- Eidgenössische Technische Hochschule Zürich, John-von-Neumann-Weg 9, 8093 Zürich, Switzerland
| | - J Walz
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
- Helmholtz-Institut Mainz, Staudingerweg 18, 55128 Mainz, Germany
| | - C Smorra
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Ulmer
- RIKEN, Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
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5
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Smorra C, Abbass F, Schweitzer D, Bohman M, Devine JD, Dutheil Y, Hobl A, Arndt B, Bauer BB, Devlin JA, Erlewein S, Fleck M, Jäger JI, Latacz BM, Micke P, Schiffelholz M, Umbrazunas G, Wiesinger M, Will C, Wursten E, Yildiz H, Blaum K, Matsuda Y, Mooser A, Ospelkaus C, Quint W, Soter A, Walz J, Yamazaki Y, Ulmer S. BASE-STEP: A transportable antiproton reservoir for fundamental interaction studies. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2023; 94:113201. [PMID: 37972020 DOI: 10.1063/5.0155492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 10/09/2023] [Indexed: 11/19/2023]
Abstract
Currently, the world's only source of low-energy antiprotons is the AD/ELENA facility located at CERN. To date, all precision measurements on single antiprotons have been conducted at this facility and provide stringent tests of fundamental interactions and their symmetries. However, magnetic field fluctuations from the facility operation limit the precision of upcoming measurements. To overcome this limitation, we have designed the transportable antiproton trap system BASE-STEP to relocate antiprotons to laboratories with a calm magnetic environment. We anticipate that the transportable antiproton trap will facilitate enhanced tests of charge, parity, and time-reversal invariance with antiprotons and provide new experimental possibilities of using transported antiprotons and other accelerator-produced exotic ions. We present here the technical design of the transportable trap system. This includes the transportable superconducting magnet, the cryogenic inlay consisting of the trap stack and detection systems, and the differential pumping section to suppress the residual gas flow into the cryogenic trap chamber.
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Affiliation(s)
- C Smorra
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
| | - F Abbass
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - D Schweitzer
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - M Bohman
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - A Hobl
- Bilfinger Noell GmbH, Würzburg, Germany
| | - B Arndt
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - B B Bauer
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
| | - J A Devlin
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- CERN, Geneva, Switzerland
| | - S Erlewein
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- CERN, Geneva, Switzerland
| | - M Fleck
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
| | - J I Jäger
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- CERN, Geneva, Switzerland
| | - B M Latacz
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- CERN, Geneva, Switzerland
| | - P Micke
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- CERN, Geneva, Switzerland
| | - M Schiffelholz
- Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany
| | - G Umbrazunas
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- Eidgenössisch Technische Hochschule Zürich, Zürich, Switzerland
| | - M Wiesinger
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - C Will
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - E Wursten
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
- CERN, Geneva, Switzerland
| | - H Yildiz
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - Y Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - A Mooser
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - C Ospelkaus
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
- Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | - W Quint
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - A Soter
- Eidgenössisch Technische Hochschule Zürich, Zürich, Switzerland
| | - J Walz
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - Y Yamazaki
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
| | - S Ulmer
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
- RIKEN, Fundamental Symmetries Laboratory, Wako, Japan
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6
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Morgner J, Tu B, König CM, Sailer T, Heiße F, Bekker H, Sikora B, Lyu C, Yerokhin VA, Harman Z, Crespo López-Urrutia JR, Keitel CH, Sturm S, Blaum K. Stringent test of QED with hydrogen-like tin. Nature 2023; 622:53-57. [PMID: 37794267 PMCID: PMC10550826 DOI: 10.1038/s41586-023-06453-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 07/19/2023] [Indexed: 10/06/2023]
Abstract
Inner-shell electrons naturally sense the electric field close to the nucleus, which can reach extreme values beyond 1015 V cm-1 for the innermost electrons1. Especially in few-electron, highly charged ions, the interaction with the electromagnetic fields can be accurately calculated within quantum electrodynamics (QED), rendering these ions good candidates to test the validity of QED in strong fields. Consequently, their Lamb shifts were intensively studied in the past several decades2,3. Another approach is the measurement of gyromagnetic factors (g factors) in highly charged ions4-7. However, so far, either experimental accuracy or small field strength in low-Z ions5,6 limited the stringency of these QED tests. Here we report on our high-precision, high-field test of QED in hydrogen-like 118Sn49+. The highly charged ions were produced with the Heidelberg electron beam ion trap (EBIT)8 and injected into the ALPHATRAP Penning-trap setup9, in which the bound-electron g factor was measured with a precision of 0.5 parts per billion (ppb). For comparison, we present state-of-the-art theory calculations, which together test the underlying QED to about 0.012%, yielding a stringent test in the strong-field regime. With this measurement, we challenge the best tests by means of the Lamb shift and, with anticipated advances in the g-factor theory, surpass them by more than an order of magnitude.
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Affiliation(s)
- J Morgner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany.
| | - B Tu
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - C M König
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - T Sailer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - F Heiße
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - H Bekker
- Helmholtz-Institut Mainz, GSI Helmholtzzentrum für Schwerionenforschung, Mainz, Germany
| | - B Sikora
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - C Lyu
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - V A Yerokhin
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - Z Harman
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | - C H Keitel
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - S Sturm
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
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7
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Nies L, Atanasov D, Athanasakis-Kaklamanakis M, Au M, Blaum K, Dobaczewski J, Hu BS, Holt JD, Karthein J, Kulikov I, Litvinov YA, Lunney D, Manea V, Miyagi T, Mougeot M, Schweikhard L, Schwenk A, Sieja K, Wienholtz F. Isomeric Excitation Energy for ^{99}In^{m} from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic ^{100}Sn. PHYSICAL REVIEW LETTERS 2023; 131:022502. [PMID: 37505949 DOI: 10.1103/physrevlett.131.022502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/10/2023] [Accepted: 06/02/2023] [Indexed: 07/30/2023]
Abstract
The excitation energy of the 1/2^{-} isomer in ^{99}In at N=50 is measured to be 671(37) keV and the mass uncertainty of the 9/2^{+} ground state is significantly reduced using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The measurements exploit a major improvement in the resolution of the multireflection time-of-flight mass spectrometer. The results reveal an intriguing constancy of the 1/2^{-} isomer excitation energies in neutron-deficient indium that persists down to the N=50 shell closure, even when all neutrons are removed from the valence shell. This trend is used to test large-scale shell model, ab initio, and density functional theory calculations. The models have difficulties describing both the isomer excitation energies and ground-state electromagnetic moments along the indium chain.
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Affiliation(s)
- L Nies
- European Organization for Nuclear Research (CERN), 1211 Geneva 23, Switzerland
- Institut für Physik, Universität Greifswald, 17487 Greifswald, Germany
| | - D Atanasov
- European Organization for Nuclear Research (CERN), 1211 Geneva 23, Switzerland
| | - M Athanasakis-Kaklamanakis
- European Organization for Nuclear Research (CERN), 1211 Geneva 23, Switzerland
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - M Au
- European Organization for Nuclear Research (CERN), 1211 Geneva 23, Switzerland
- Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - J Dobaczewski
- School of Physics, Engineering and Technology, University of York, Heslington, York YO10 5DD, United Kingdom
- Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Warsaw, ul. Pasteura 5, PL-02-093 Warsaw, Poland
| | - B S Hu
- TRIUMF, TRIUMF 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - J D Holt
- TRIUMF, TRIUMF 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- Department of Physics, McGill University, Montréal, Quebec H3A 2T8, Canada
| | - J Karthein
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - I Kulikov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - Yu A Litvinov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - D Lunney
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - V Manea
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - T Miyagi
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
- ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - M Mougeot
- European Organization for Nuclear Research (CERN), 1211 Geneva 23, Switzerland
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - L Schweikhard
- Institut für Physik, Universität Greifswald, 17487 Greifswald, Germany
| | - A Schwenk
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
- ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - K Sieja
- IPHC, CNRS/IN2P3 et Université de Strasbourg, F-67037 Strasbourg, France
| | - F Wienholtz
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
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8
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Boublil S, Blair D, Treagust DF. Design and Implementation of an Einsteinian Energy Learning Module. INTERNATIONAL JOURNAL OF SCIENCE AND MATHEMATICS EDUCATION 2023; 22:49-72. [PMID: 38192727 PMCID: PMC10771381 DOI: 10.1007/s10763-022-10348-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 12/05/2022] [Indexed: 01/10/2024]
Abstract
The most famous equation in physics, E = mc2, is rarely introduced in middle school physics curricula. Recent research has shown that teaching Einsteinian concepts at the middle school level is feasible and beneficial. This paper analyses an Einsteinian energy teaching module for Year 8 students (13-14 years old), which encompasses the two fundamental energy formulas in modern physics, E = mc2 and E = hf. In the context of activity-based learning, the Einsteinian energy module relates to all the forms of energy in traditional school curricula. This study uses a design-based research approach within the Model of Educational Reconstruction framework. Modern experiments, historical events, and educational research helped us identify relevant Einsteinian energy concepts, activities, and assessments. The study included 22 students who participated in nine in-class Einsteinian energy lessons. Analysing results in the post-test showed a 31% mean increase from the pre-test, a clear and significant positive change in students' conceptual understanding. The results demonstrated students' ability to deal with very large and small constants of proportionality and physical concepts involved in the module.
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Affiliation(s)
- Shachar Boublil
- School of Physics, University of Western Australia, Crawley, Perth, Australia
| | - David Blair
- School of Physics, University of Western Australia, Crawley, Perth, Australia
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9
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On Atomic Lifetimes and Environmental Density. ATOMS 2022. [DOI: 10.3390/atoms10040114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Atomic lifetime measurements span a wide range, from attoseconds to years. The frontier of exploratory lifetime measurements, presently, is in the long part of the above time range, with an eye on astrophysical problems. In a combination of review paper, tutorial, and Editorial, the physical environments and experiments are discussed, in which the results of such lifetime measurements matter. Although accurate lifetime measurement results are important for our understanding of atomic structure and dynamics, and for the diagnostics of various plasma environments, the order of magnitude is often precise enough to see why time resolution may be of interest in an experiment, from laser-produced plasmas of high densities to planetary nebulae of very low densities.
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10
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Völksen F, Devlin JA, Borchert MJ, Erlewein SR, Fleck M, Jäger JI, Latacz BM, Micke P, Nuschke P, Umbrazunas G, Wursten EJ, Abbass F, Bohman MA, Popper D, Wiesinger M, Will C, Blaum K, Matsuda Y, Mooser A, Ospelkaus C, Smorra C, Soter A, Quint W, Walz J, Yamazaki Y, Ulmer S. A high-Q superconducting toroidal medium frequency detection system with a capacitively adjustable frequency range >180 kHz. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:093303. [PMID: 36182508 DOI: 10.1063/5.0089182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
We describe a newly developed polytetrafluoroethylene/copper capacitor driven by a cryogenic piezoelectric slip-stick stage and demonstrate with the chosen layout cryogenic capacitance tuning of ≈60 pF at ≈10 pF background capacitance. Connected to a highly sensitive superconducting toroidal LC circuit, we demonstrate tuning of the resonant frequency between 345 and 685 kHz, at quality factors Q > 100 000. Connected to a cryogenic ultra low noise amplifier, a frequency tuning range between 520 and 710 kHz is reached, while quality factors Q > 86 000 are achieved. This new device can be used as a versatile image current detector in high-precision Penning-trap experiments or as an LC-circuit-based haloscope detector to search for the conversion of axion-like dark matter to radio-frequency photons. This new development increases the sensitive detection bandwidth of our axion haloscope by a factor of ≈1000.
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Affiliation(s)
- F Völksen
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J A Devlin
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M J Borchert
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S R Erlewein
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Fleck
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J I Jäger
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - B M Latacz
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - P Micke
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - P Nuschke
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - G Umbrazunas
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - E J Wursten
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - F Abbass
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M A Bohman
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Popper
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Wiesinger
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - C Will
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - Y Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-0041, Japan
| | - A Mooser
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - C Ospelkaus
- Institut für Quantenoptik, Leibniz Universität, Welfengarten 1, D-30167 Hannover, Germany
| | - C Smorra
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Soter
- Eidgenössisch Technische Hochschule Zürich, Rämistrasse 101, 8092 Zürich, Switzerland
| | - W Quint
- GSI-Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, D-64291 Darmstadt, Germany
| | - J Walz
- Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany
| | - Y Yamazaki
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Ulmer
- RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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11
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Filianin P, Lyu C, Door M, Blaum K, Huang WJ, Haverkort M, Indelicato P, Keitel CH, Kromer K, Lange D, Novikov YN, Rischka A, Schüssler RX, Schweiger C, Sturm S, Ulmer S, Harman Z, Eliseev S. Direct Q-Value Determination of the β^{-} Decay of ^{187}Re. PHYSICAL REVIEW LETTERS 2021; 127:072502. [PMID: 34459634 DOI: 10.1103/physrevlett.127.072502] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/01/2021] [Accepted: 07/08/2021] [Indexed: 06/13/2023]
Abstract
The cyclotron frequency ratio of ^{187}Os^{29+} to ^{187}Re^{29+} ions was measured with the Penning-trap mass spectrometer PENTATRAP. The achieved result of R=1.000 000 013 882(5) is to date the most precise such measurement performed on ions. Furthermore, the total binding-energy difference of the 29 missing electrons in Re and Os was calculated by relativistic multiconfiguration methods, yielding the value of ΔE=53.5(10) eV. Finally, using the achieved results, the mass difference between neutral ^{187}Re and ^{187}Os, i.e., the Q value of the β^{-} decay of ^{187}Re, is determined to be 2470.9(13) eV.
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Affiliation(s)
- P Filianin
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - C Lyu
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M Door
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - W J Huang
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M Haverkort
- Institute for Theoretical Physics, Heidelberg University, 69120 Heidelberg, Germany
| | | | - C H Keitel
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - K Kromer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - D Lange
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - Y N Novikov
- Department of Physics, St Petersburg State University, St Petersburg 198504, Russia
- NRC "Kurchatov Institute"-Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - A Rischka
- ARC Centre for Engineered Quantum Systems, School of Physics, The University of Sydney, NSW 2006, Australia
| | - R X Schüssler
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - Ch Schweiger
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - S Sturm
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - S Ulmer
- Ulmer Fundamental Symmetries Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
| | - Z Harman
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - S Eliseev
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
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12
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Stark J, Warnecke C, Bogen S, Chen S, Dijck EA, Kühn S, Rosner MK, Graf A, Nauta J, Oelmann JH, Schmöger L, Schwarz M, Liebert D, Spieß LJ, King SA, Leopold T, Micke P, Schmidt PO, Pfeifer T, Crespo López-Urrutia JR. An ultralow-noise superconducting radio-frequency ion trap for frequency metrology with highly charged ions. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:083203. [PMID: 34470420 DOI: 10.1063/5.0046569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
We present a novel ultrastable superconducting radio-frequency (RF) ion trap realized as a combination of an RF cavity and a linear Paul trap. Its RF quadrupole mode at 34.52 MHz reaches a quality factor of Q ≈ 2.3 × 105 at a temperature of 4.1 K and is used to radially confine ions in an ultralow-noise pseudopotential. This concept is expected to strongly suppress motional heating rates and related frequency shifts that limit the ultimate accuracy achieved in advanced ion traps for frequency metrology. Running with its low-vibration cryogenic cooling system, electron-beam ion trap, and deceleration beamline supplying highly charged ions (HCIs), the superconducting trap offers ideal conditions for optical frequency metrology with ionic species. We report its proof-of-principle operation as a quadrupole-mass filter with HCIs and trapping of Doppler-cooled 9Be+ Coulomb crystals.
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Affiliation(s)
- J Stark
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - C Warnecke
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - S Bogen
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - S Chen
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - E A Dijck
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - S Kühn
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - M K Rosner
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - A Graf
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - J Nauta
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - J-H Oelmann
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - L Schmöger
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - M Schwarz
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - D Liebert
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - L J Spieß
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - S A King
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
| | - T Leopold
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
| | - P Micke
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - P O Schmidt
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
| | - T Pfeifer
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
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13
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A Laboratory Astrophysics Problem: The Lifetime of Very Long-Lived Levels in Low-Charge Ions. ATOMS 2020. [DOI: 10.3390/atoms8020021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Emission lines of singly charged ions populate many astrophysical spectra. However, the interpretation of the line intensities (usually line ratios) often depends on the transition rates of the decays of very long-lived low-lying levels. For example, the line ratio of two electric-dipole forbidden transitions in the 3s 2 3p 3 ground configuration of singly ionized sulfur (ion S + , spectrum S II) has been interpreted in terms of a density diagnostic for planetary nebulae, i.e., for densities in the order of 10 4 cm − 3 . The predicted lifetimes of the 2 D 3 / 2 , 5 / 2 o levels are in the order of one hour. Modeling indicates that a 10% uncertainty of the lifetime determination in this case corresponds to a 50% uncertainty of the density diagnostic. The available theoretical lifetime predictions scatter by much more than 10%. Considerations about an experimental approach are presented with the goal of instigating a measurement of the actual level lifetimes.
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14
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Safronova MS. Mass spectrometry for future atomic clocks. Nature 2020; 581:35-36. [DOI: 10.1038/d41586-020-01251-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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