1
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Vernon AR, Garcia Ruiz RF, Miyagi T, Binnersley CL, Billowes J, Bissell ML, Bonnard J, Cocolios TE, Dobaczewski J, Farooq-Smith GJ, Flanagan KT, Georgiev G, Gins W, de Groote RP, Heinke R, Holt JD, Hustings J, Koszorús Á, Leimbach D, Lynch KM, Neyens G, Stroberg SR, Wilkins SG, Yang XF, Yordanov DT. Nuclear moments of indium isotopes reveal abrupt change at magic number 82. Nature 2022; 607:260-265. [PMID: 35831598 DOI: 10.1038/s41586-022-04818-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 04/28/2022] [Indexed: 11/09/2022]
Abstract
In spite of the high-density and strongly correlated nature of the atomic nucleus, experimental and theoretical evidence suggests that around particular 'magic' numbers of nucleons, nuclear properties are governed by a single unpaired nucleon1,2. A microscopic understanding of the extent of this behaviour and its evolution in neutron-rich nuclei remains an open question in nuclear physics3-5. The indium isotopes are considered a textbook example of this phenomenon6, in which the constancy of their electromagnetic properties indicated that a single unpaired proton hole can provide the identity of a complex many-nucleon system6,7. Here we present precision laser spectroscopy measurements performed to investigate the validity of this simple single-particle picture. Observation of an abrupt change in the dipole moment at N = 82 indicates that, whereas the single-particle picture indeed dominates at neutron magic number N = 82 (refs. 2,8), it does not for previously studied isotopes. To investigate the microscopic origin of these observations, our work provides a combined effort with developments in two complementary nuclear many-body methods: ab initio valence-space in-medium similarity renormalization group and density functional theory (DFT). We find that the inclusion of time-symmetry-breaking mean fields is essential for a correct description of nuclear magnetic properties, which were previously poorly constrained. These experimental and theoretical findings are key to understanding how seemingly simple single-particle phenomena naturally emerge from complex interactions among protons and neutrons.
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Affiliation(s)
- A R Vernon
- School of Physics and Astronomy, The University of Manchester, Manchester, UK. .,Massachusetts Institute of Technology, Cambridge, MA, USA. .,Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium.
| | - R F Garcia Ruiz
- Massachusetts Institute of Technology, Cambridge, MA, USA. .,Experimental Physics Department, CERN, Geneva, Switzerland.
| | - T Miyagi
- TRIUMF, Vancouver, British Columbia, Canada
| | - C L Binnersley
- School of Physics and Astronomy, The University of Manchester, Manchester, UK
| | - J Billowes
- School of Physics and Astronomy, The University of Manchester, Manchester, UK
| | - M L Bissell
- School of Physics and Astronomy, The University of Manchester, Manchester, UK
| | - J Bonnard
- Department of Physics, University of York, Heslington, York, UK
| | - T E Cocolios
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium
| | - J Dobaczewski
- Department of Physics, University of York, Heslington, York, UK.,Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
| | - G J Farooq-Smith
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium
| | - K T Flanagan
- School of Physics and Astronomy, The University of Manchester, Manchester, UK.,Photon Science Institute, The University of Manchester, Manchester, UK
| | - G Georgiev
- IJCLab, CNRS/IN2P3, Université Paris-Saclay, Orsay, France
| | - W Gins
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium.,Department of Physics, University of Jyväskylä, Jyväskylä, Finland
| | - R P de Groote
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium.,Department of Physics, University of Jyväskylä, Jyväskylä, Finland
| | - R Heinke
- Experimental Physics Department, CERN, Geneva, Switzerland.,Institut für Physik, Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - J D Holt
- TRIUMF, Vancouver, British Columbia, Canada.,Department of Physics, McGill University, Montréal, Québec, Canada
| | - J Hustings
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium
| | - Á Koszorús
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium
| | - D Leimbach
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Mainz, Germany.,Engineering Department, CERN, Geneva, Switzerland.,Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | - K M Lynch
- Experimental Physics Department, CERN, Geneva, Switzerland
| | - G Neyens
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium.,Experimental Physics Department, CERN, Geneva, Switzerland
| | - S R Stroberg
- Department of Physics, University of Washington, Seattle, WA, USA
| | - S G Wilkins
- School of Physics and Astronomy, The University of Manchester, Manchester, UK.,Massachusetts Institute of Technology, Cambridge, MA, USA
| | - X F Yang
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium.,School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China
| | - D T Yordanov
- Experimental Physics Department, CERN, Geneva, Switzerland.,IJCLab, CNRS/IN2P3, Université Paris-Saclay, Orsay, France
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2
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Leblond S, Marqués FM, Gibelin J, Orr NA, Kondo Y, Nakamura T, Bonnard J, Michel N, Achouri NL, Aumann T, Baba H, Delaunay F, Deshayes Q, Doornenbal P, Fukuda N, Hwang JW, Inabe N, Isobe T, Kameda D, Kanno D, Kim S, Kobayashi N, Kobayashi T, Kubo T, Lee J, Minakata R, Motobayashi T, Murai D, Murakami T, Muto K, Nakashima T, Nakatsuka N, Navin A, Nishi S, Ogoshi S, Otsu H, Sato H, Satou Y, Shimizu Y, Suzuki H, Takahashi K, Takeda H, Takeuchi S, Tanaka R, Togano Y, Tuff AG, Vandebrouck M, Yoneda K. First Observation of ^{20}B and ^{21}B. Phys Rev Lett 2018; 121:262502. [PMID: 30636115 DOI: 10.1103/physrevlett.121.262502] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/23/2018] [Indexed: 06/09/2023]
Abstract
The most neutron-rich boron isotopes ^{20}B and ^{21}B have been observed for the first time following proton removal from ^{22}N and ^{22}C at energies around 230 MeV/nucleon. Both nuclei were found to exist as resonances which were detected through their decay into ^{19}B and one or two neutrons. Two-proton removal from ^{22}N populated a prominent resonancelike structure in ^{20}B at around 2.5 MeV above the one-neutron decay threshold, which is interpreted as arising from the closely spaced 1^{-},2^{-} ground-state doublet predicted by the shell model. In the case of proton removal from ^{22}C, the ^{19}B plus one- and two-neutron channels were consistent with the population of a resonance in ^{21}B 2.47±0.19 MeV above the two-neutron decay threshold, which is found to exhibit direct two-neutron decay. The ground-state mass excesses determined for ^{20,21}B are found to be in agreement with mass surface extrapolations derived within the latest atomic-mass evaluations.
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Affiliation(s)
- S Leblond
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - F M Marqués
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - J Gibelin
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - N A Orr
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - J Bonnard
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
| | - N Michel
- NSCL/FRIB Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- School of Physics, Peking University, Beijing 100871, China
| | - N L Achouri
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - T Aumann
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - F Delaunay
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - Q Deshayes
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - P Doornenbal
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - N Fukuda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J W Hwang
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - N Inabe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Kameda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Kanno
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Kim
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - N Kobayashi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - T Kubo
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Lee
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - R Minakata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Murai
- Departiment of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - T Murakami
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - K Muto
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - T Nakashima
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - A Navin
- GANIL, CEA/DRF-CNRS/IN2P3, F-14076 Caen Cedex 5, France
| | - S Nishi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Ogoshi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Satou
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Suzuki
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Takahashi
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - H Takeda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Takeuchi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - R Tanaka
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - A G Tuff
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
| | - M Vandebrouck
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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3
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Boso A, Lenzi SM, Recchia F, Bonnard J, Zuker AP, Aydin S, Bentley MA, Cederwall B, Clement E, de France G, Di Nitto A, Dijon A, Doncel M, Ghazi-Moradi F, Gadea A, Gottardo A, Henry T, Hüyük T, Jaworski G, John PR, Juhász K, Kuti I, Melon B, Mengoni D, Michelagnoli C, Modamio V, Napoli DR, Nyakó BM, Nyberg J, Palacz M, Timár J, Valiente-Dobón JJ. Neutron Skin Effects in Mirror Energy Differences: The Case of ^{23}Mg-^{23}Na. Phys Rev Lett 2018; 121:032502. [PMID: 30085775 DOI: 10.1103/physrevlett.121.032502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Indexed: 06/08/2023]
Abstract
Energy differences between analogue states in the T=1/2 ^{23}Mg-^{23}Na mirror nuclei have been measured along the rotational yrast bands. This allows us to search for effects arising from isospin-symmetry-breaking interactions (ISB) and/or shape changes. Data are interpreted in the shell model framework following the method successfully applied to nuclei in the f_{7/2} shell. It is shown that the introduction of a schematic ISB interaction of the same type of that used in the f_{7/2} shell is needed to reproduce the data. An alternative novel description, applied here for the first time, relies on the use of an effective interaction deduced from a realistic charge-dependent chiral nucleon-nucleon potential. This analysis provides two important results: (i) The mirror energy differences give direct insight into the nuclear skin; (ii) the skin changes along the rotational bands are strongly correlated with the difference between the neutron and proton occupations of the s_{1/2} "halo" orbit.
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Affiliation(s)
- A Boso
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - S M Lenzi
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - F Recchia
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - J Bonnard
- INFN, Sezione di Padova, I-35131 Padova, Italy
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France
| | - A P Zuker
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova, Italy
- Universitè de Strasbourg and IPHC, F-67000 Strasbourg, France
| | - S Aydin
- Aksaray Universitesi, Department of Physics, TR-68100 Aksaray, Turkey
| | - M A Bentley
- University of York, Department of Physics, YO10 5DD York, United Kingdom
| | - B Cederwall
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - E Clement
- GANIL, CEA/DRF-CNRS/IN2P3, F-14076 Caen, France
| | - G de France
- GANIL, CEA/DRF-CNRS/IN2P3, F-14076 Caen, France
| | - A Di Nitto
- Dipartimento di Fisica and INFN, Sezione di Napoli, I-80126 Napoli, Italy
- Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany
| | - A Dijon
- GANIL, CEA/DRF-CNRS/IN2P3, F-14076 Caen, France
| | - M Doncel
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - F Ghazi-Moradi
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - A Gadea
- IFIC, CSIC-Universitat de València, E-46980 Valencia, Spain
| | - A Gottardo
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova), Italy
| | - T Henry
- University of York, Department of Physics, YO10 5DD York, United Kingdom
| | - T Hüyük
- IFIC, CSIC-Universitat de València, E-46980 Valencia, Spain
| | - G Jaworski
- Heavy Ion Laboratory, Warsaw University, 02-093 Warszawa, Poland
| | - P R John
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - K Juhász
- Institute of Nuclear Research (ATOMKI) of Hung. Acad. Sciences, H-4001 Debrecen, Hungary
| | - I Kuti
- Institute of Nuclear Research (ATOMKI) of Hung. Acad. Sciences, H-4001 Debrecen, Hungary
| | - B Melon
- Dipartimento di Fisica and INFN, Sezione di Firenze, I-50019 Firenze, Italy
| | - D Mengoni
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - C Michelagnoli
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - V Modamio
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova), Italy
| | - D R Napoli
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova), Italy
| | - B M Nyakó
- Institute of Nuclear Research (ATOMKI) of Hung. Acad. Sciences, H-4001 Debrecen, Hungary
| | - J Nyberg
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - M Palacz
- Heavy Ion Laboratory, Warsaw University, 02-093 Warszawa, Poland
| | - J Timár
- Institute of Nuclear Research (ATOMKI) of Hung. Acad. Sciences, H-4001 Debrecen, Hungary
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Bonnard J, Lenzi SM, Zuker AP. Neutron Skins and Halo Orbits in the sd and pf Shells. Phys Rev Lett 2016; 116:212501. [PMID: 27284653 DOI: 10.1103/physrevlett.116.212501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Indexed: 06/06/2023]
Abstract
The strong dependence of Coulomb energies on nuclear radii makes it possible to extract the latter from calculations of the former. The resulting estimates of neutron skins indicate that two mechanisms are involved. The first one-isovector monopole polarizability-amounts to noting that when a particle is added to a system it drives the radii of neutrons and protons in different directions, tending to equalize the radii of both fluids independently of the neutron excess. This mechanism is well understood and the Duflo-Zuker (small) neutron skin values derived 14 years ago are consistent with recent measures and estimates. The alternative mechanism involves halo orbits whose huge sizes tend to make the neutron skins larger and have a subtle influence on the radial behavior of sd and pf shell nuclei. In particular, they account for the sudden rise in the isotope shifts of nuclei beyond N=28 and the near constancy of radii in the A=40-56 region. This mechanism, detected here for the first time, is not well understood and may well go beyond the Efimov physics usually associated with halo orbits.
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Affiliation(s)
- J Bonnard
- Istituto Nazionale di Fisica Nucleare, Sezione di Padova, 35131 Padova, Italy
| | - S M Lenzi
- Istituto Nazionale di Fisica Nucleare, Sezione di Padova, 35131 Padova, Italy
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova, Italy
| | - A P Zuker
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova, Italy
- Université de Strasbourg, IPHC, CNRS, UMR7178, 23 rue du Loess, 67037 Strasbourg, France
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5
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Bonnard J, Juillet O. Constrained-path quantum Monte Carlo approach for the nuclear shell model. Phys Rev Lett 2013; 111:012502. [PMID: 23862996 DOI: 10.1103/physrevlett.111.012502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 05/03/2013] [Indexed: 06/02/2023]
Abstract
A new quantum Monte Carlo approach is proposed to investigate low-lying states of nuclei within the shell model. The formalism relies on a variational symmetry-restored wave function to guide the underlying Brownian motion. Sign or phase problems that usually plague quantum Monte Carlo fermionic simulations are controlled by constraining stochastic paths through a fixed-node-like approximation. Exploratory results in the sd and pf valence spaces with realistic effective interactions are presented. They prove the ability of the scheme to yield nearly exact yrast spectroscopies for both even- and odd-mass nuclei.
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Affiliation(s)
- J Bonnard
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, Caen, France
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6
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Freymond N, Blondeau D, Devouassoux G, Jennequin J, Barbotin C, Bonnard J, Pacheco Y. Poster 31. Rev Mal Respir 2008. [DOI: 10.1016/s0761-8425(08)71654-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Bail P, Bizel P, Bonnard J, Compagnon C, Dosquet S, Dupuis G, Fabre H, Glorion B, Lienhart A, Nicolas F, Noël A, Pazart L, Pinell P, Pellerin D, Sargos P, Serin D, Thouvenin D, Thurin J. [Patient information. Guidelines for practitioners - March 2000]. Ann Endocrinol (Paris) 2001; 62:84-7. [PMID: 11240409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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8
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Abstract
A capillary electrophoresis (CE) method was developed for the stereoselective determination of the non-steroidal anti-inflammatory drug (NSAID), S-naproxen, in tablets. Several beta-cyclodextrin derivatives (CDs) were tested as chiral selectors, including sulfobutyl-beta-CD (SBCD), carboxymethyl-beta-CD (CMCD), dimethyl-beta-CD (DMCD) and trimethyl-beta-CD (TMCD), in a phosphoric acid/triethanolamine pH 3 buffer. Under these conditions, the analyte was mainly present in an uncharged form and therefore, the use a neutral CD (DMCD or TMCD) alone could not lead to enantiomeric separation. On the contrary, by addition of a charged CD (SBCD or CMCD) to the running buffer, giving the analyte enantiomers an adequate mobility, chiral resolution could be achieved, although the resolution values obtained in this case were not quite satisfactory (Rs < 1.5). Dual systems, based on the use of mixtures of charged and neutral CDs, were then investigated. The SBCD/TMCD system was found to be particularly well suited to the enantioseparation of naproxen and after optimisation of the concentrations of both CDs, a resolution value of 5.4 could be obtained. The method was validated for the determination of R-naproxen (enantiomeric impurity) in the 0.1-2% range, using the racemic mixture of the analyte. A second validation was performed in the 50-150% range for the quantitation of S-naproxen. In both cases, good results with respect to linearity, precision and accuracy were obtained.
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Affiliation(s)
- M Fillet
- Department of Analytical Pharmaceutical Chemistry, Institute of Pharmacy, University of Liège, Belgium.
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9
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Quintens I, Beer JD, Bonnard J, Hoogmartens J. Evaluation of Analytical Methods. Folic Acid—Loss on Drying or Karl Fischer Titration? ANAL LETT 1992. [DOI: 10.1080/00032719208018252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Mathot F, Bonnard J, Paris P, Bosly J. [Reliable continuous IV perfusion system for diazepam (author's transl)]. J Pharm Belg 1982; 37:153-156. [PMID: 7108734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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11
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Mathot F, Bonnard J, Hans P, Bosly J. [I.V. infusion of glyceryl trinitrate. Study of the sorption on various plastic containers (author's transl)]. J Pharm Belg 1980; 35:389-93. [PMID: 6778985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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12
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Adam R, Versluys J, Bonnard J, De Herdt C, Denis E, Gloesener E, Melon W, Van Haelen M. [Identification of excipients of some creams of complex formulation]. J Pharm Belg 1975; 30:309-24. [PMID: 1206461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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13
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Grandjean J, Crommen J, Longrée R, Bonnard J, Bosly J. [Diagrams of extraction of methaqualone. Applications]. J Pharm Belg 1974; 29:333-40. [PMID: 4420691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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14
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Adam R, Bonnard J, De Herdt C, Denis E, Gloesener E, Soquet A, Van Haelen M. [Identification of excipients in tablets]. J Pharm Belg 1972; 27:442-56. [PMID: 4681076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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15
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Gracia H, Bonnard J. [Determination of naphazoline and naphthylacetylethylenediamine in a mixture with sodium tetraphenylboron]. Farmaco Prat 1972; 27:39-48. [PMID: 4110443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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16
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Bonnard J, Marionneau J, Misura A. [Use of electron beams in association with telecobalt (value and 1st applications with a betatron of 20 MeV)]. J Radiol Electrol Med Nucl 1971; 52:405-10. [PMID: 5001114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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17
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Bonnard J. [Analysis of basic drugs using sodium tetraphenylborate]. J Pharm Belg 1971; 26:135-165. [PMID: 5560484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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18
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Cornet E, Kerneis JP, Dupon H, Mussini J, Nicolas F, Bonnard J, de Lajartre AY, Michaud JL. [Surgical aspects of thymus pathology]. Ann Chir Thorac Cardiovasc 1969; 8:765-75. [PMID: 5398626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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19
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Stainier C, Bonnard J. [Dosage of atropine in the presence of benzocaine: precipitation with sodium tetraphenylborate and spectrophotometry]. Pharm Weekbl 1969; 104:648-51. [PMID: 5789011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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20
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Bonnard J, Guihard R, Herzog A, Marionneau J, Le Noc Y. [1st results of postoperative cobalt therapy of malignant tumors of the ovary at the René-Gauducheau Center]. J Radiol Electrol Med Nucl 1968; 49:166-8. [PMID: 5662102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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21
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Delaire J, Billet J, Bonnard J, Guihard R, Guihard D, Marionneau J, Le Noc Y. [On the value of electrocoagulation by the Cernéa method after cobalt therapy in buccopharyngeal epitheliomas]. J Radiol Electrol Med Nucl 1968; 49:169-71. [PMID: 5662104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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22
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Bonnard J, Guihard D, Le Noc Y, Marionneau J. [Results at 3 and 4 years obtained by telecobalt therapy of hypopharyngeal cancers]. J Radiol Electrol Med Nucl 1968; 49:175-9. [PMID: 5662106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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23
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Tardiveau J, Bonnard J, Guihard R, Marionneau J, Tostivint Y. [Some reflections apropos of the treatment of progressive cancers of the breast]. J Radiol Electrol Med Nucl 1967; 48:817-26. [PMID: 6083169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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24
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Bonnard J, Guihard D, Marionneau J. [Castration and cancer of the breast]. J Radiol Electrol Med Nucl 1967; 48:859-66. [PMID: 6083175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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25
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Mousseau M, Barbin JY, Gentin F, Bonnard J, Guihard D, Tostivint Y. [Surgery on the irradiated breast]. J Radiol Electrol Med Nucl 1967; 48:767. [PMID: 5591675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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26
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Bonnard J. [Determination of quinine and quinidine by the weight of tetraphenylborides. Regeneration of their bases]. J Pharm Belg 1967; 22:354-66. [PMID: 5608934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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27
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Bonnard J. [The use of sodium tetraphenylboride in the determination of alkaloids and synthetic bases]. Farmaco Prat 1967; 22:305-25. [PMID: 6063599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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28
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Bonnard J. [Quantitative regeneration of organic bases precipitated under the form of tetraphenylboride]. J Pharm Belg 1966; 21:363-74. [PMID: 5957039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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29
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Bonnard J. [Technic for prosthetic refitting and rebasing using autopolymerizing resins under direct or indirect hydraulic pressure]. Actual Odontostomatol (Paris) 1965; 71:335-44. [PMID: 5847395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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30
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Delaire J, Billet J, Tardiveau J, Bonnard J, Kérébel B. Considérations on the pathogenesis of postradiotherapy and postcobaltotherapic dental lesions. Therapeutic deductions. Actual Odontostomatol (Paris) 1965; 19:157-84. [PMID: 5825518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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