Speaker
Prof.
Naohito Iwasa
(Department of Physics, Tohoku University)
Description
The Coulomb excitation of the very proton-rich nucleus $^{20}$Mg was studied using a radioactive $^{20}$Mg beam at 58 $A$ MeV impinging on a lead target.
The reduced transition probability $B$(E2; $0^+_{gs}\rightarrow 2^+_1$) was extracted.
The ratio of the neutron-to-proton multipole matrix elements $M_n/M_p$
was deduced by comparing the $B$(E2) with that for the mirror nucleus $^{20}$O assuming the isospin symmetry.
The results confirm the large $M_n/M_p$ in $^{20}$O, leading to a large isovector component for the transition.
Primary author
Prof.
Naohito Iwasa
(Department of Physics, Tohoku University)
Co-authors
Dr
Akito Saito
(Center of Nuclear Study (CNS), University of Tokyo)
Dr
Eri Takeshita
(RIKEN)
Dr
Hironori Iwasaki
(Department of Physics, University of Tokyo)
Mr
Hiroshi Suzuki
(Department of Physics, University of Tokyo)
Prof.
Hiroyoshi Sakurai
(RIKEN)
Dr
Hitoshi Morikawa
(Department of Physics, Rikkyo University)
Prof.
Isao Tanihata
(RCNP, Osaka University)
Dr
Julien Gibelin
(nstitut de Physique Nucl\'eaire, IN2P3-CNRS)
Mr
Kazuhiro Ishikawa
(TIT)
Dr
Kazunari Yamada
(RIKEN)
Prof.
Kazuo Ieki
(Department of Physics, Rikkyo University)
Prof.
Kazuyoshi Kurita
(Department of Physics, Rikkyo University)
Mr
Koji Yamaguchi
(Department of Physics, Rikkyo University)
Mr
Kosuke Sugawara
(Department of Physics, Saitama University)
Dr
Masahiro Notani
(Physics Division, Argonne National Laboratory)
Dr
Megumi Niikura
(Center of Nuclear Study (CNS), University of Tokyo)
Dr
Meiko Kurokawa
(RIKEN)
Mr
Motooki Hosoi
(Department of Physics, Saitama University)
Mr
Nobuyuki Matsui
(Department of Physics, Tokyo Institute of Technology)
Dr
Shawn Bishop
(RIKEN)
Dr
Shinsuke Ota
(enter of Nuclear Study (CNS), University of Tokyo)
Ms
Shoko Kawai
(Department of Physics, Rikkyo University)
Prof.
Sigeru Kubono
(Center of Nuclear Study (CNS), University of Tokyo)
Prof.
Susumu Shimoura
(Center of Nuclear Study (CNS), University of Tokyo)
Prof.
Takashi Nakamura
(Department of Physics, Tokyo Institute of Technology)
Dr
Takashi Sugimoto
(Department of Physics, Tokyo Institute of Technology)
Prof.
Takashi Teranishi
(Department of Physics, Kyushu University)
Prof.
Takeshi Suzuki
(epartment of Physics, Saitama University)
Prof.
Tohru Motobayashi
(RIKEN)
Dr
Toshiyuki Minemura
(RIKEN)
Dr
Yasuhiro Togano
(Department of Physics, Rikkyo University)
Dr
Yoshiyuki Yanagisawa
(RIKEN)
Dr
Zoltan Elekes
(nstitute of Nuclear Research of the Hungarian Academy of Sciences)
