Shape changes at high spin in 78Kr

A. Dhal; R. K. Sinha; P. Agarwal; S. Kumar; B. B. Singh; R. Kumar; P. Bringel; A. Neusser; R. Kumar; K. S. Golda; R. P. Singh; S. Muralithar; N. Madhavan; J. J. Das; A. Shukla; P. K. Raina; K. S. Thind; A. K. Sinha; I. M. Govil; P. K. Joshi; R. K. Bhowmik; A. K. Jain; S. C. Pancholi; L. Chaturvedi

doi:10.1140/epja/i2005-10230-0

2021 Impact factor 3.131

Hadrons and Nuclei

Eur. Phys. J. A (2006) 27: 33-36
https://doi.org/10.1140/epja/i2005-10230-0

Nuclear Structure and Reactions

Shape changes at high spin in ⁷⁸Kr

A. Dhal¹^*, R. K. Sinha¹, P. Agarwal², S. Kumar², Monika³, B. B. Singh⁴, R. Kumar⁴, P. Bringel⁵, A. Neusser⁵, R. Kumar⁶, K. S. Golda⁶, R. P. Singh⁶, S. Muralithar⁶, N. Madhavan⁶, J. J. Das⁶, A. Shukla⁷, P. K. Raina⁷, K. S. Thind³, A. K. Sinha⁸, I. M. Govil⁴, P. K. Joshi⁹, R. K. Bhowmik⁶, A. K. Jain², S. C. Pancholi⁶ and L. Chaturvedi¹

¹ Department of Physics, Banaras Hindu University, 221 005, Varanasi, India
² Department of Physics, IIT Roorkee, 247 667, Roorkee, India
³ Department of Physics, Guru Nanak Dev University, 143 005, Amritsar, India
⁴ Department of Physics, Panjab University, 160 014, Chandigarh, India
⁵ HISKP, University of Bonn, Germany
⁶ Inter University Accelerator Center, 110 067, New Delhi, India
⁷ Department of Physics and Meteorology, IIT Kharagpur, 721 302, Kharagpur, India
⁸ IUC-DAE Consortium for Scientific Research, Kolkata Centre, 700 091, Kolkata, India
⁹ Tata Institute of Fundamental Research, 400 005, Mumbai, India

^* e-mail: anukul_uu@rediffmail.com

Received: 19 September 2005
Accepted: 2 February 2006
Published online: 15 February 2006

Abstract

High-spin states in ⁷⁸Kr have been studied via the ⁶³Cu (¹⁹F, 2p2n)⁷⁸Kr reaction at a beam energy of 60 MeV using the Indian National Gamma Array (INGA). In this nucleus, lifetimes have been measured upto the I ^π=22⁺ level in the yrast positive-parity band and upto the I ^π=15^- level in the negative-parity band using the Doppler Shift Attenuation Method (DSAM). The deduced transition quadrupole moments Q_t's are found to decrease with rotational frequency for both the bands.