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Fujita Y, Fujita H, Adachi T, Bai CL, Algora A, Berg GPA, von Brentano P, Colò G, Csatlós M, Deaven JM, Estevez-Aguado E, Fransen C, De Frenne D, Fujita K, Ganioğlu E, Guess CJ, Gulyás J, Hatanaka K, Hirota K, Honma M, Ishikawa D, Jacobs E, Krasznahorkay A, Matsubara H, Matsuyanagi K, Meharchand R, Molina F, Muto K, Nakanishi K, Negret A, Okamura H, Ong HJ, Otsuka T, Pietralla N, Perdikakis G, Popescu L, Rubio B, Sagawa H, Sarriguren P, Scholl C, Shimbara Y, Shimizu Y, Susoy G, Suzuki T, Tameshige Y, Tamii A, Thies JH, Uchida M, Wakasa T, Yosoi M, Zegers RGT, Zell KO, Zenihiro J. Observation of low- and high-energy Gamow-Teller phonon excitations in nuclei. Phys Rev Lett 2014; 112:112502. [PMID: 24702355 DOI: 10.1103/physrevlett.112.112502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Indexed: 06/03/2023]
Abstract
Gamow-Teller (GT) transitions in atomic nuclei are sensitive to both nuclear shell structure and effective residual interactions. The nuclear GT excitations were studied for the mass number A = 42, 46, 50, and 54 "f-shell" nuclei in ((3)He, t) charge-exchange reactions. In the (42)Ca → (42)Sc reaction, most of the GT strength is concentrated in the lowest excited state at 0.6 MeV, suggesting the existence of a low-energy GT phonon excitation. As A increases, a high-energy GT phonon excitation develops in the 6-11 MeV region. In the (54)Fe → (54)Co reaction, the high-energy GT phonon excitation mainly carries the GT strength. The existence of these two GT phonon excitations are attributed to the 2 fermionic degrees of freedom in nuclei.
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Affiliation(s)
- Y Fujita
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan and Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Fujita
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Adachi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - C L Bai
- Department of Physics, Sichuan University, Chengdu 610065, China
| | - A Algora
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain and Institute for Nuclear Research (MTA-Atomki), H-4001 Debrecen, Post Office Box 51, Hungary
| | - G P A Berg
- Department of Physics and JINA, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - P von Brentano
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - G Colò
- Dipartimento di Fisica, Università degli Studi di Milano, and INFN, Sezione di Milano, via Celoria 16, 20133 Milano, Italy
| | - M Csatlós
- Institute for Nuclear Research (MTA-Atomki), H-4001 Debrecen, Post Office Box 51, Hungary
| | - J M Deaven
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA
| | - E Estevez-Aguado
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - C Fransen
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - D De Frenne
- Vakgroep Subatomaire en Stralingsfysica, Universiteit Gent, B-9000 Gent, Belgium
| | - K Fujita
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - E Ganioğlu
- Department of Physics, Istanbul University, Istanbul 34134, Turkey
| | - C J Guess
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA
| | - J Gulyás
- Institute for Nuclear Research (MTA-Atomki), H-4001 Debrecen, Post Office Box 51, Hungary
| | - K Hatanaka
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - K Hirota
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - M Honma
- Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, Japan
| | - D Ishikawa
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - E Jacobs
- Vakgroep Subatomaire en Stralingsfysica, Universiteit Gent, B-9000 Gent, Belgium
| | - A Krasznahorkay
- Institute for Nuclear Research (MTA-Atomki), H-4001 Debrecen, Post Office Box 51, Hungary
| | - H Matsubara
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - K Matsuyanagi
- RIKEN, Nishina Center, Wako Saitama 351-0198, Japan and Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
| | - R Meharchand
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA
| | - F Molina
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - K Muto
- Department of Physics, Tokyo Institute of Technology, Ohokayama, Meguro, Tokyo 152-8551, Japan
| | - K Nakanishi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - A Negret
- Horia Hulubei National Institute for Physics and Nuclear Engineering, 077125 Bucharest-Magurele, Romania
| | - H Okamura
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H J Ong
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Otsuka
- Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - N Pietralla
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - G Perdikakis
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA and Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, USA
| | - L Popescu
- SCK-CEN, Belgian Nuclear Research Center, B-2400 Mol, Belgium
| | - B Rubio
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - H Sagawa
- Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, Japan and RIKEN, Nishina Center, Wako Saitama 351-0198, Japan
| | - P Sarriguren
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 123, E-28006 Madrid, Spain
| | - C Scholl
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - Y Shimbara
- Graduate School of Science and Technology, Niigata University, Nishi, Niigata 950-2181, Japan
| | - Y Shimizu
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - G Susoy
- Department of Physics, Istanbul University, Istanbul 34134, Turkey
| | - T Suzuki
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Y Tameshige
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - A Tamii
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - J H Thies
- Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
| | - M Uchida
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Wakasa
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - M Yosoi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - R G T Zegers
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA
| | - K O Zell
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - J Zenihiro
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
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