E0 transitions in 106Pd: Implications for shape coexistence

E. E. Peters; F. M. Prados-Estévez; A. Chakraborty; M. G. Mynk; D. Bandyopadhyay; S. N. Choudry; B. P. Crider; P. E. Garrett; S. F. Hicks; A. Kumar; S. R. Lesher; C. J. McKay; J. N. Orce; M. Scheck; J. R. Vanhoy; J. L. Wood; S. W. Yates

doi:10.1140/epja/i2016-16096-y

2021 Impact factor 3.131

Hadrons and Nuclei

Eur. Phys. J. A (2016) 52: 96
https://doi.org/10.1140/epja/i2016-16096-y

Regular Article - Experimental Physics

E0 transitions in ¹⁰⁶Pd: Implications for shape coexistence

E. E. Peters¹^*, F. M. Prados-Estévez¹^,2, A. Chakraborty¹^,2, M. G. Mynk¹, D. Bandyopadhyay², S. N. Choudry², B. P. Crider², P. E. Garrett³, S. F. Hicks⁴, A. Kumar², S. R. Lesher², C. J. McKay², J. N. Orce², M. Scheck², J. R. Vanhoy⁵, J. L. Wood⁶ and S. W. Yates¹^,2

¹ Department of Chemistry, University of Kentucky, 40506, Lexington, KY, USA
² Department of Physics & Astronomy, University of Kentucky, 40506, Lexington, KY, USA
³ Department of Physics, University of Guelph, N1G2W1, Guelph, Ontario, Canada
⁴ Department of Physics, University of Dallas, 75062, Irving, TX, USA
⁵ Department of Physics, United States Naval Academy, 21402, Annapolis, MD, USA
⁶ School of Physics, Georgia Institute of Technology, 30332, Atlanta, GA, USA

^* e-mail: fe.peters@uky.edu

Received: 23 January 2016
Accepted: 15 February 2016
Published online: 20 April 2016

Abstract

Level lifetimes in ¹⁰⁶Pd were measured with the Doppler-shift attenuation method following inelastic neutron scattering, and electric monopole transition strengths between low-lying 2⁺ states were deduced. The large (E0) values obtained provide evidence for shape coexistence, extending observation of such structures in the N = 60 isotones. Included in these results is the first determination of the E0 transition strength in the Pd nuclei between levels with K = 2 .