Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session EM: Nuclear Structure A=6-20 Part II
7:00 PM–9:30 PM,
Thursday, October 25, 2018
Hilton
Room: Queen's 6
Chair: Frederic Sarazin, Colorado School of Mines
Abstract ID: BAPS.2018.HAW.EM.9
Abstract: EM.00009 : Search for alpha-cluster state in 20Ne
9:00 PM–9:15 PM
Presenter:
Hidetoshi Akimune
(Konan University)
Authors:
Hidetoshi Akimune
(Konan University)
Motoki Murata
(Department of Physics, Kyoto University)
Takahiro Kawabata
(Department of Physics, Osaka University)
Tatsuya Furuno
(RCNP (Osaka University))
Yuki Fujikawa
(Department of Physics, Kyoto University)
Kento Inaba
(Department of Physics, Kyoto University)
Miho Tsumura
(Department of Physics, Kyoto University)
Makoto Kinoshita
(Konan University)
Kazuya Kitamura
(Konan University)
Shugo Nagamine
(Konan University)
Kyoko Nosaka
(Konan University)
We searched for a state consisting of many α clusters in 20Ne excited state.
Ikeda and collaborators predicted that α cluster state exists near the threshold of decay to nα. Experimentally, up to the 3 α cluster state of 12C has been confirmed so far. 20Ne is a candidate for 5 α state with Z = 10 and N = 10.
Results of an experiment on the emulsion exposure to medium-heavy nuclei of a few GeV have been reported. In this experiment, events that collapse into a number of α particles have been observed. The characteristic of these events is that the relative momentum of released alpha particles relative to the incident nuclei is very small and the momentum transfer to incident particles is small. We considered that this reaction might be excitation of an alpha-cluster state by Coulomb excitation by heavy nuclei in the emulsion.
The experiment has been carried out at NewSUBARU electron storage ring facility with an incident laser Compton scattering (LCS) photon beam and the active gas target MAIKo.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.EM.9
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