Observation of the proton-pairing vibration in 48Ca |
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| Affiliation: | 1. Chair for Crystallography and Structural Physics, Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany;2. Computational Biology, Department of Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany;3. Institut Laue-Langevin (ILL), Science Division, Grenoble, France;4. Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Garching bei München, Germany;1. School of Materials Science and Engineering, UNSW Australia, Sydney, New South Wales 2052, Australia;2. Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia;3. Nelson Mandela Metropolitain University, Gardham Av., 6031 Port Elizabeth, South Africa;4. Materials Science and Applied Mathematics, Malmö University, Östra Varvsgatan 11 A, Malmö, Skane 20506, Sweden;5. The Bragg Institute, Australian Nuclear Science and Technology Organisation, Lucas Heights, New South Wales 2234, Australia;6. European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France;1. Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, SE-901 83, Umea, Sweden;2. Mälardalen University, School of Business, Society and Engineering, SE 721 23, Västerås, Sweden;1. Technical University of Denmark, Frederiksborgvej 399, DK - 4000, Roskilde, Denmark;2. European Spallation Source ESS AB, P.O Box 176, SE-221 00, Lund, Sweden;3. Xnovo Technology Aps, Galoche Allé 15, DK-4600, Køge, Denmark;4. Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland;1. Materials Science and Applied Mathematics, Malmö University, Nordenskiöldsgatan 1, Malmö 20506, Sweden;2. Nelson Mandela Metropolitan University, Gardham Avenue, 6031 Port Elizabeth, South Africa;3. School of Materials Science and Engineering, UNSW Australia, Sydney, New South Wales 2052, Australia;4. Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia;5. European Synchrotron Radiation Facility, 6 rue J Horowitz, 38043 Grenoble, France;6. PIMM, ENSAM CNAM CNRS, 151 Boulevard d l’Hopital, 75013 Paris, France |
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| Abstract: | The two-proton transfer reaction (14C, 16O) has been investigated at 96 MeV on targets of 50Ti and 48Ca. The 48Ca states at 0 MeV (0+), 3.83 MeV (2+), 4.28 MeV (0+) and 4.50 MeV (3−) and the 46Ar ground state were excited. The 4.28 MeV 0+state has a transfer strength comparable to the g.s. transition to 46Ar and a predominant proton vibrational character. The interpretation of the state as the proton-pairing vibrational state is supported by estimates of the excitation energy based on experimental binding energies. |
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