Eur. Phys. J. A (2005) 25: 415-417
https://doi.org/10.1140/epjad/i2005-06-154-5

ENAM 2004

Intermediate-energy Coulomb excitation of the neutron-rich Ge isotopes around N = 50

¹ Department of Physics, University of Tokyo, 7-3-1 Hongo, 113-0033, Bunkyo, Tokyo, Japan
² RIKEN, 2-1 Hirosawa, 351-0198, Wako, Saitama, Japan
³ Department of Physics, Kyoto University, 606-8502, Kitashirakawa, Kyoto, Japan
⁴ Center for Nuclear Study (CNS), University of Tokyo, 2-1 Hirosawa, 351-0198, Wako, Saitama, Japan
⁵ Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, 171-8501, Toshima, Tokyo, Japan
⁶ Department of Physics, Tohoku University, 980-8578, Aoba, Sendai, Miyagi, Japan
⁷ Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, 152-8551, Meguro, Tokyo, Japan

^* e-mail: hiwasaki@phys.s.u-tokyo.ac.jp

Received: 1 October 2004
Accepted: 21 April 2005
Published online: 4 July 2005

Abstract

Structure of the neutron-rich Ge isotopes at and around N = 50 has been investigated via intermediate-energy Coulomb excitation using secondary beams of ^78-82Ge incident on a Pb target. The B(E2) values for the low-lying 2⁺ states have been extracted and compared with the data for neighboring isotopes around N = 50. In addition, a new method of intermediate-energy two-step Coulomb excitation has been proposed as a spectroscopic tool to study the 4⁺ states in neutron-rich even-even nuclei. The first application of the method and its results are presented.