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  New Precision Mass Measurements of Neutron-Rich Calcium and Potassium Isotopes and Three-Nucleon Forces

Gallant, A., Bale, J., Brunner, T., Chowdhury, U., Ettenauer, S., Lennarz, A., et al. (2012). New Precision Mass Measurements of Neutron-Rich Calcium and Potassium Isotopes and Three-Nucleon Forces. Physical Review Letters, 109(3): 032506, pp. 1-5. doi:10.1103/PhysRevLett.109.032506.

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1204.1987v1 (Preprint), 569KB
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Gallant, A.T.1, 2, Author
Bale, J.C.1, 3, Author
Brunner, T.1, Author
Chowdhury, U.1, 4, Author
Ettenauer, S.1, 2, Author
Lennarz, A.1, 5, Author
Robertson, D.1, Author
Simon, Vanessa V.1, 6, 7, Author           
Chaudhuri, A.1, Author
Holt, J.D.8, 9, Author
Kwiatkowski, A.A.1, Author
Mané, E.1, Author
Menéndez, J.10, 11, Author
Schultz, B.E.1, Author
Simon, M.C.1, Author
Andreoiu, C.3, Author
Delheij, P.1, Author
Pearson, M.R.1, Author
Savajols, H.12, Author
Schwenk, A.10, 11, Author
Dilling, J.1, 2, Author more..
Affiliations:
1TRIUMF, University of British Columbia, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada, ou_persistent22              
2Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada, ou_persistent22              
3Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada, ou_persistent22              
4Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada, ou_persistent22              
5Institut für Kernphysik, Westfälische Wilhelms-Universität, 48149 Münster, Germany, ou_persistent22              
6Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              
7Fakulät für Physik und Astronomie, Ruprecht-Karls-Universität Heidelberg, 69120 Heidelberg, Germany, ou_persistent22              
8Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA, ou_persistent22              
9Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831, USA, ou_persistent22              
10Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany, ou_persistent22              
11ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, ou_persistent22              
12GANIL, Boulevard Henri Becquerel, Boîte Postale, 55027F-14076 Caen Cedex 05, France, ou_persistent22              

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 Abstract: We present precision Penning trap mass measurements of neutron-rich calcium and potassium isotopes in the vicinity of neutron number N=32. Using the TITAN system, the mass of 51K was measured for the first time, and the precision of the 51,52Ca mass values were improved significantly. The new mass values show a dramatic increase of the binding energy compared to those reported in the atomic mass evaluation. In particular, 52Ca is more bound by 1.74 MeV, and the behavior with neutron number deviates substantially from the tabulated values. An increased binding was predicted recently based on calculations that include three-nucleon (3N) forces. We present a comparison to improved calculations, which agree remarkably with the evolution of masses with neutron number, making neutron-rich calcium isotopes an exciting region to probe 3N forces

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Language(s): eng - English
 Dates: 2012-07-20
 Publication Status: Issued
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.109.032506
 Degree: -

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Title: Physical Review Letters
  Other : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y., etc. : American Physical Society.
Pages: - Volume / Issue: 109 (3) Sequence Number: 032506 Start / End Page: 1 - 5 Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406