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 DH: Mini-Symposium: Active Target Techniques for Studies with Exotic Beams
9:00 AM–12:00 PM,
Thursday, October 25, 2018
Hilton
Room: Kona 2/3
Chair: Andrew Rogers, University of Massachusetts, Lowell
Abstract ID: BAPS.2018.HAW.DH.4
Abstract: DH.00004 : A New Experiment to Search for the Alpha Condensed State in 24Mg with MAIKo TPC
10:00 AM–10:15 AM
Presenter:
Kento Inaba
(Department of Physics, Kyoto Univiersity)
Authors:
Kento Inaba
(Department of Physics, Kyoto Univiersity)
Takahiro Kawabata
(Department of Physics, Osaka University)
Tatsuya Furuno
(RCNP, Osaka University)
Motoki Murata
(Department of Physics, Kyoto University)
Recently, exotic low-density states, which is called αcondensed states, have been suggested to emerge near the nα-decay thresholds in self-conjugate A = 4n nuclei. These αcondensed states are expected to give an insight into the low-density nuclear matter.
The αcondensed states are considered to decay by emitting multiple low-energy αparticles, reflecting their exotic structures. We plan to search for the αcondensed states in 24Mg by detecting multiple low-energy decay αparticles with MAIKo-TPC. We can measure decay particles over large angular coverage by installing a 24Mg target in the sensitive volume of MAIKo-TPC.
We should use a high-intensity beam at about 1010cps to achieve sufficient statistics in the experiment. When such a high-intensity beam is introduced to the 24Mg in a conventional TPC, however, there occur serious problems such as distortion of the electric field or electric discharges due to many electrons and ions induced by the high-rate beam. In order to avoid these problems, we have developed a mask to make an insensitive region along the beam trajectories.
In the present talk, we will report an overview of the experiment to search for the αcondensed state in 24Mg and the result from the performance test of MAIKo-TPC using the high-intensity beam.To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.DH.4
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