https://doi.org/10.1140/epja/i2006-08-049-x
Nuclear Physics in Astrophysics II
Testing of the RIKEN-ATOMKI CsI(Tl) array in the study of 22, 23O nuclear structure
1
Institute of Nuclear Research of the Hungarian Academy of Sciences, P.O. Box 51, H-4001, Debrecen, Hungary
2
The Institute of Physical and Chemical Research, 2-1 Hirosawa, 351-0198, Wako, Saitama, Japan
3
Institut de Physique Nucléaire, 15 rue Georges Clemenceau, 91406, Orsay, France
4
Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, 152-8550, Tokyo, Japan
5
Tohoku University, 980-8578, Sendai, Miyagi, Japan
6
University of Tokyo, 113-0033, Tokyo, Japan
7
Kurchatov Institute, Kurchatov sq. 1, 123182, Moscow, Russia
8
Rikkyo University, 3-34-1 Nishi-Ikebukuro, 171-8501, Toshima, Tokyo, Japan
9
Kyoto University, 606-8501, Kyoto, Japan
* e-mail: elekes@atomki.hu
Received:
27
July
2005
Accepted:
20
December
2005
Published online:
15
March
2006
The paper reports on the test of the newly developed RIKEN-ATOMKI CsI(Tl) array. It is demonstrated that high-quality detectors with excellent light collection efficiency and narrow resolution distribution could be produced. The setup has been commissioned in the study of the reaction of 22O + CD2. In the present paper, we summarize the results mainly on the (d, d ′) channel. From the cross section for the transition between the ground state and the first 2+ state, we could deduce the “matter” deformation parameter to be βM = 0.23±0.02 by distorted wave analysis. Comparing this data with previous measurements it can be concluded that 22O isotope has moderate and similar neutron and proton deformations.
PACS: 25.70.Hi Transfer reactions – / 27.30.+t 20 ⩽ A ⩽ 38 – / 29.30.Kv X- and gamma-ray spectroscopy – / 29.30.Ep Charged-particle spectroscopy –
© Società Italiana di Fisica and Springer-Verlag, 2006