Eur. Phys. J. A (2003) 18: 87-92
https://doi.org/10.1140/epja/i2003-10063-9

OriginalPaper

Multiple Coulomb excitation experiment of ⁶⁶ Zn

¹ Japan Atomic Energy Research Institute, Tokai, 319-1195, Ibaraki , Japan
² Graduate School of Science & Engineering, Ibaraki University, Bunkyo 2-1-1, Mito, 310-8512, Ibaraki, Japan
³ Heavy Ion Laboratory, Warsaw University, Pasteura 5a, 02-093, Warszawa, Poland
⁴ Chiba Institute of Technology, Narashino, 275-0023, Chiba, Japan
⁵ Kyushu University, Hakozaki, 812-8581, Fukuoka, Japan
⁶ Chiba University, Inage-ku, 263-8522, Chiba, Japan

^* e-mail: koizumi@jball4.tokai.jaeri.go.jp

Abstract

A Coulomb excitation experiment was carried out with a ⁶⁶Zn beam bombarding a ${}^{\rm nat}$Pb target. Four E2 matrix elements and the quadrupole moment of the 2₁ ⁺ state were derived with the least-squares search code GOSIA. According to the B(E2) values, the ground band can be interpreted as a quasirotational band. It was found that the 2₁ ⁺ level has a positive quadrupole moment, which may be interpreted as a soft triaxial deformation.