Speaker
Mr
Jumpei Yasuda
(Department of Physics, Kyushu University)
Description
Charge exchange (CE) reactions at intermediate energies have long been used to investigate isovector spin-transfer excitations in stable nuclei[1]. Recently, significant progress has been made to employ CE reactions to the study of unstable isotopes. The most important step was the development of the (p,n) reaction in inverse kinematics[2,3].
To efficiently perform (p,n) reaction experiments in inverse kinematics, we have developed a new setup of the WINDS + SAMURAI spectrometer[4] at RIKEN RIBF. In the setup, the WINDS (Wide-angle Inverse-kinematics Neutron Detectors for SHARAQ) is used for the detection of recoil neutrons and the SAMURAI spectrometer is used for tagging the (p,n) reactions. The main advantage of the setup is as follows. All the heavy fragments with different rigidities can be detected with the large acceptance of the SAMURAI spectrometer at the same time, i.e. without changing the setting of the magnetic field. This is important especially for tagging the decay channels with multi-nucleon emission, because the momentum spread of the heavy fragments rapidly becomes larger with the increase of the number of the emitted nucleons.
The first experiment by using the WINDS + SAMURAI was performed in April 2014 at RIKEN RIBF to study Gamow-Teller transition in 132Sn by using (p,n) reaction. Details of the experimental setup and the current status of the data analysis will be reported.
Reference
[1] F. Osterfeld, Rev. Mod. Phys. 64, 491 (1992).
[2] M. Sasano et al., Phys. Rev. Lett. 107, 202501 (2011).
[3] M. Sasano et al., Phys. Rev. C 86, 034324 (2012).
[4] T. Kobayashi et al., Nucl. Instr. Meth. B 317, 294 (2013).
Primary author
Mr
Jumpei Yasuda
(Department of Physics, Kyushu University)
Co-authors
Prof.
Attila Krasznahorkay
(MTA, Atomki, Debrecen, Hungary)
Mr
C.S. Lee
(CNS, University of Tokyo)
Dr
Daisuke Kameda
(RIKEN Nishina Center)
Prof.
Daniel Bazin
(NSCL, Michigan State University)
Dr
Dennis Mucher
(Technical University Munich)
Mr
Evgenly Milman
(RIKEN Nishina Center)
Dr
Genie Jhang
(RIKEN Nishina Center)
Prof.
Hideaki Otsu
(RIKEN Nishina Center)
Dr
Hidetada Baba
(RIKEN Nishina Center)
Prof.
Hideyuki Sakai
(ULIC, RIKEN Nishina Center)
Dr
Hiromi Sato
(RIKEN Nishina Center)
Dr
Hiroshi Suzuki
(RIKEN Nishina Center)
Mr
Hiroshi Tokieda
(CNS, University of Tokyo)
Dr
Hiroyuki Takeda
(RIKEN Nishina Center)
Mr
Junichi Tsubota
(Tokyo Institute of Technology)
Dr
Juzo Zenihiro
(RIKEN Nishina Center)
Mr
Keiichi Kisamori
(CNS, University of Tokyo)
Prof.
Ken-Ichiro Yoneda
(RIKEN Nishina Center)
Prof.
Kentaro Yako
(CNS, University of Tokyo)
Dr
Laszlo Stuhl
(RIKEN Nishina Center)
Dr
Masaki Sasano
(RIKEN Nishina Center)
Dr
Masami Sako
(RIKEN Nishina Center)
Dr
Masanori Dozono
(CNS, University of Tokyo)
Mr
Masanori Kaneko
(Kyoto University)
Dr
Mizuki Nishimura-Kurata
(RIKEN Nishina Center)
Ms
Mizuki Shikata
(Tokyo Institute of Technology)
Mr
Motoki Kobayashi
(CNS, University of Tokyo)
Mr
Motonobu Takaki
(CNS, University of Tokyo)
Dr
Naoki Fukuda
(RIKEN Nishina Center)
Dr
Naoto Inabe
(RIKEN Nishina Center)
Dr
Nobuyuki Kobayashi
(University of Tokyo)
Mr
Noritsugu Nakatsuka
(Kyoto University)
Prof.
R.G.T Zegers
(NSCL Michigan State University)
Dr
Satoshi Sakagushi
(Department of Physics, Kyushu University)
Mr
Sebastian Reichert
(Technical University Munich)
Prof.
Shin'ichiro Michimasa
(CNS, University of Tokyo)
Dr
Shinsuke Ota
(CNS, University of Tokyo)
Mr
Shoichiro Kawase
(CNS, University of Tokyo)
Mr
Shumpei Koyama
(University of Tokyo)
Prof.
Susumu Shimoura
(CNS, University of Tokyo)
Dr
Tadaaki Isobe
(RIKEN Nishina Center)
Mr
Tadashi Takou
(Department of Physics, Tohoku University)
Prof.
Takashi Nakamura
(Tokyo Institute of Technology)
Mr
Tangwancharoen Suwat
(RIKEN Nishina Center)
Prof.
Tetsuya Murakami
(Kyoto University)
Prof.
Tomohiro Uesaka
(RIKEN Nishina Center)
Prof.
Tomotsugu Wakasa
(Department of Physics, Kyushu University)
Prof.
Toru Motobayashi
(RIKEN Nishina Center)
Prof.
Toshio Kobayashi
(Department of Physics, Tohoku University)
Prof.
Toshiyuki Kubo
(RIKEN Nishina Center)
Dr
Toshiyuki Sumikama
(Department of Physics, Tohoku University)
Dr
Valeri Panin
(RIKEN Nishina Center)
Ms
Wen Chao
(RIKEN Nishina Center)
Dr
William Powell
(RIKEN Nishina Center)
Dr
Yasunori Togano
(Tokyo Institute of Technology)
Dr
Yohei Matsuda
(Konan University)
Dr
Yohei Shimizu
(RIKEN Nishina Center)
Dr
Yosuke Kondo
(Tokyo Institute of Technology)
Mr
Yuki Kubota
(Center for Nuclear Study, The University of Tokyo)