Eur. Phys. J. A (2009) 42: 471-475
https://doi.org/10.1140/epja/i2009-10857-7

Regular Article - Experimental Physics

Yrast spectroscopy in ^49-51Ti via fusion-evaporation reaction induced by a radioactive beam

¹ Center for Nuclear Study, the University of Tokyo, 351-0198, 2-1 Hirosawa, Wako, Saitama, Japan
² RIKEN Nishina Center, 351-0198, 2-1 Hirosawa, Wako, Saitama, Japan
³ Department of Physics, the University of Tokyo, 113-0033, 7-3-1 Hongo, Tokyo, Japan
⁴ Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Rd., 730000, Lanzhou, China

^* e-mail: niikura@ipno.in2p3.fr

Received: 31 December 2008
Revised: 24 April 2009
Accepted: 17 June 2009
Published online: 20 August 2009

Abstract

In-beam -ray spectroscopy of high-spin states in ^49-51Ti was performed via the fusion-evaporation reaction using a radioactive beam. By excitation function and - coincidence analysis, yrast high-spin levels up to I = (21/2^-),(11⁺),(17/2^-) in ^49-51Ti were determined. The levels were compared with full-pf -shell model calculation. The level structure indicates the persistency of the N = 28 shell gap at yrast states in ^49-51Ti .