Eur. Phys. J. A (2006) 30: 391-396
https://doi.org/10.1140/epja/i2006-10139-0

Nuclear Structure and Reactions

Excited states in neutron-rich ¹⁸⁸W produced by an ¹⁸O-induced 2-neutron transfer reaction

¹ Quantum Beam Science Directorate, Japan Atomic Energy Agency, 619-0215, Kizu, Kyoto, Japan
² Advanced Science Research Center, Japan Atomic Energy Agency, 319-1195, Tokai, Ibaraki, Japan
³ Department of Energy Sciences, Tokyo Institute of Technology, 226-8502, Yokohama, Japan
⁴ Department of Research Reactor and Tandem Accelerator, Japan Atomic Energy Agency, 319-1195, Tokai, Ibaraki, Japan
⁵ Center for Nuclear Study, University of Tokyo, 351-0198, Wako, Saitama, Japan
⁶ Department of Physics, Kyushu University, 812-8581, Fukuoka, Japan
⁷ Department of Physics, University of Surrey, GU2 7XH, Guildford, UK

^* e-mail: shizuma.toshiyuki@jaea.go.jp

Received: 1 September 2006
Accepted: 23 October 2006
Published online: 24 November 2006

Abstract

Excited states in neutron-rich ¹⁸⁸W have been populated using a ¹⁸⁶W(¹⁸O,¹⁶O) reaction. In-beam γ-rays were measured in coincidence with scattered particles detected by a high-resolution ΔE-E Si telescope. In this experiment, the ground-state band has been identified up to I ^π = 8⁺. The γ band, the K ^π = 2^- octupole band, and a 2-quasiparticle state were also observed. The results are compared with predictions of self-consistent HFB cranking calculations and blocked-BCS multi-quasiparticle calculations.