Preliminary results of lifetime measurements in neutron-rich ⁵³Ti

¹ Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
² GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen Cedex 5, France
³ CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris–Saclay, F–91405 Orsay, France
⁴ Université de Lyon, Université de Lyon 1, CNRS/IN2P3, IPN-Lyon, F–69622 Villeurbanne, France
⁵ Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
⁶ INFN Sezione di Padova, I-35141 Padova, Italy
⁷ Dipartimento di Fisica e Astronomia dell’Università di Padova, I-35131 Padova, Italy
⁸ Laboratori Nazionali di Legnaro, INFN, I-35020 Legnaro, Italy
⁹ Nuclear Physics Group, Schuster Laboratory, University of Manchester, Manchester, UK
¹⁰ GSI, Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
¹¹ Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
¹² Instituto de Físcia Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
¹³ Irfu, CEA, Université Paris–Saclay, F-91191 Gif-sur-Yvette, France

^* e-mail: agoldkuhle@ikp.uni-koeln.de

Published online: 4 December 2019

Abstract

To study the nuclear structure of neutron-rich titanium isotopes, a lifetime measurement was performed at the Grand Accélérateur National d'Ions Lourds (GANIL) facility in Caen, France. The nucleiwere produced in a multinucleon-transfer reaction by using a 6.76 MeV/u ²³⁸U beam. The Advanced Gamma Tracking Array (AGATA) was employed for the γ-ray detection and target-like recoils were identified event-by-event by the large-acceptance variable mode spectrometer (VAMOS++). Preliminary level lifetimes of the (5/2⁻) to 13/2⁻ states of the yrast band in the neutron-rich nucleus ⁵³Ti were measured for the first time employing the recoil distance Doppler-shift (RDDS) method and the compact plunger for deep inelastic reactions. The differential decay curve method (DDCM) was used to obtain the lifetimes from the RDDS data.