Speaker
Jongwon Hwang
(Seoul National University)
Description
The neutron-rich isotope, 16C has been investigated by neutron knockout reaction
of 17C on liquid hydrogen target. Applying the invariant mass method in inverse kinematics and gamma-ray spectroscopy, the energy spectrum was reconstructed, in which neutrons, charged fragments, and gamma-rays originated from the decay of the reaction residue (16C*) were detected in coincidence. A peak at about 0.46 MeV was observed in the invariant mass spectrum in coincidence with a peak at 0.74 MeV in the gamma-ray spectrum, which indicates the presence of an unbound state with an excitation energy of 5.45 MeV. A simple shell model calculation has shown a strong evidence that the spin-parity of the state is likely to be 2-. Derivation of the experimental cross-section and comparison with the theoretical cross-section will be presented.
Primary author
Jongwon Hwang
(Seoul National University)
Co-authors
H. J. Ong
(Department of Physics, University of Tokyo, Tokyo, Japan)
H. Otsu
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
H. Sakurai
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
M. Ishihara
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
M. Kitayama
(Department of Physics, Tohoku University, Miyagi, Japan)
M. Shinohara
(Department of Physics, Tokyo Institute of Technology, Tokyo, Japan)
N. Aoi
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
N. Endo
(Department of Physics, Tohoku University, Miyagi, Japan)
N. Fukuda
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
N. Matsui
(Department of Physics, Tokyo Institute of Technology, Tokyo, Japan)
N. Tamaki
(Center for Nuclear Study (CNS), University of Tokyo, Saitama, Japan)
S. Kawai
(Department of Physics, Rikkyo University, Tokyo, Japan)
S. Shimoura
(Center for Nuclear Study (CNS), University of Tokyo, Saitama, Japan)
S. Takeuchi
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
T. Gomi
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
T. K. Onishi
(Department of Physics, University of Tokyo, Tokyo, Japan)
T. Kobayashi
(Department of Physics, Tohoku University, Miyagi, Japan)
T. Motobayashi
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
T. Nakabayashi
(Department of Physics, Tokyo Institute of Technology, Tokyo, Japan)
T. Nakamura
(Department of Physics, Tokyo Institute of Technology, Tokyo, Japan)
T. Okamura
(Department of Physics, Tokyo Institute of Technology, Tokyo, Japan)
T. Sugimoto
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
Y. Hashimoto
(Department of Physics, Tokyo Institute of Technology, Tokyo, Japan)
Y. Kondo
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
Y. Matsuda
(Department of Physics, Tohoku University, Miyagi, Japan)
Y. Satou
(Department of Physics and Astronomy, Seoul National University, Seoul, Korea)
Y. Togano
(Department of Physics, Rikkyo University, Tokyo, Japan)
Y. Yanagisawa
(The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan)
