Eur. Phys. J. A (2005) 25: 367-370
https://doi.org/10.1140/epjad/i2005-06-048-6

ENAM 2004

Study of single-particle states in ²³F using proton transfer reaction

¹ Institute of Physical and Chemical Research, RIKEN, 351-0198, 2-1 Hirosawa, Wako, Saitama, Japan
² Center for Nuclear Study, University of Tokyo, 351-0198, 2-1 Hirosawa, Wako, Saitama, Japan
³ Department of Physics, University of Tokyo, 133-0033, 7-3-1 Hongo, Bunkyo, Tokyo, Japan
⁴ Department of Physics, Kyoto University, 606-8502, Kitashirakawa, Kyoto, Japan
⁵ Department of Physics, Tohoku University, 980-8578, Aoba, Sendai, Miyagi, Japan
⁶ Department of Physics, Rikkyo University, 171-8501, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo, Japan

^* e-mail: mitimasa@riken.jp

Received: 22 November 2004
Accepted: 18 February 2005
Published online: 9 May 2005

Abstract

The proton shell structure in neutron-rich fluorine ²³F was investigated using the in-beam γ-ray spectroscopy technique via the proton transfer reaction onto the unstable nucleus ²²O, in addition to α inelastic scattering on ²³F, and the neutron-knockout reaction from ²⁴F. The level and γ-decay scheme in ²³F was deduced from de-excitation γ-ray-particle coincidence events. We found that a single-particle state at 4.061MeV has a large contribution from the d shell by the analysis of population strengths and the angular distribution for the state. We reported here the present experiment and the preliminary results.