β-γ and isomeric decay spectroscopy of ¹⁶⁸Dy

¹ IRCNPC, School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, china
² RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, japan
³ Department of Nuclear Physics, R.S.P.E., Australian National University, Canberra, ACT 0200, Australia
⁴ Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
⁵ Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
⁶ National Physical Laboratory, Teddington, Middlesex, TW11 0LW, United Kingdom
⁷ Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043 Toyonaka, Japan
⁸ MTA Atomki, P. O. Box 51, Debrecen, H-4001, Hungary
⁹ Department of Physics, Chung-Ang University, Seoul 156-756, Republic of Korea
¹⁰ Department of Physics, the University of Hong Kong, Pokfulam Road, Hong Kong
¹¹ Department of Physics, Peking University, Beijing 100871, China
¹² Department of Physics, College of Science in Zulfi, Almajmaah University, P.O. Box 1712, 11932, Saudi Arabia
¹³ School of Computing Engineering and Mathematics, University of Brighton, Brighton, BN2 4GJ, United Kingdom
¹⁴ Department of Physics, Sungkyunkwan University, Suwon 440-746, Republic of Korea
¹⁵ School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
¹⁶ Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047, Japan
¹⁷ GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstad, Germany
¹⁸ National Physical Laboratory, Teddington, Middlesex, TW11 0LW, United Kingdom
¹⁹ Department of Display Engineering, Hoseo University, Chung-Nam 336-795, Republic of Korea
²⁰ Department of Physics, Tohoku University, Aoba, Sendai, Miyagi 980-8578, Japan
²¹ School of Computing Engineering and Mathematics, University of Brighton, Brighton, BN2 4GJ, United Kingdom
²² VNU Hanoi University of Science, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam
²³ School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
²⁴ Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy

Published online: 16 May 2018

Abstract

This contribution will report on the experimental work on the level structure of ¹⁶⁸Dy. The experimental data have been taken as part of the EURICA decay spectroscopy campaign at RIBF, RIKEN in November 2014. In the experiment, a ²³⁸U primary beam is accelerated up to 345 MeV/u with an average intensity of 12 pnA. The nuclei of interest are produced by in-flight fission of ²³⁸U impinging on Be target with a thickness of 5 mm. The excited states of ¹⁶⁸Dy have been populated through the decay from a newly identified isomeric state and via the β decay from ¹⁶⁸Tb. In this contribution, scientific motivations, experimental procedure and some preliminary results for this study are presented.