Physics Letters B (Nov 2018)
Shape coexistence and mixing of low-lying 0+ states in 96Sr
- S. Cruz,
- P.C. Bender,
- R. Krücken,
- K. Wimmer,
- F. Ames,
- C. Andreoiu,
- R.A.E. Austin,
- C.S. Bancroft,
- R. Braid,
- T. Bruhn,
- W.N. Catford,
- A. Cheeseman,
- A. Chester,
- D.S. Cross,
- C.Aa. Diget,
- T. Drake,
- A.B. Garnsworthy,
- G. Hackman,
- R. Kanungo,
- A. Knapton,
- W. Korten,
- K. Kuhn,
- J. Lassen,
- R. Laxdal,
- M. Marchetto,
- A. Matta,
- D. Miller,
- M. Moukaddam,
- N.A. Orr,
- N. Sachmpazidi,
- A. Sanetullaev,
- C.E. Svensson,
- N. Terpstra,
- C. Unsworth,
- P.J. Voss
Affiliations
- S. Cruz
- Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; TRIUMF, Vancouver, BC V6T 2A3, Canada
- P.C. Bender
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- R. Krücken
- Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; TRIUMF, Vancouver, BC V6T 2A3, Canada
- K. Wimmer
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Physics, Central Michigan University, Mt Pleasant, MI 48859, USA; Corresponding author.
- F. Ames
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- C. Andreoiu
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- R.A.E. Austin
- Department of Astronomy and Physics, Saint Mary's University, Halifax, NS B3H 3C2, Canada
- C.S. Bancroft
- Department of Physics, Central Michigan University, Mt Pleasant, MI 48859, USA
- R. Braid
- Department of Physics, Central Michigan University, Mt Pleasant, MI 48859, USA
- T. Bruhn
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- W.N. Catford
- Department of Physics, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom
- A. Cheeseman
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- A. Chester
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- D.S. Cross
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- C.Aa. Diget
- Department of Physics, University of York, York, YO10 5DD, United Kingdom
- T. Drake
- Department of Physics, University of Toronto, Toronto, ON M5S 1A7, Canada
- A.B. Garnsworthy
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- G. Hackman
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- R. Kanungo
- Department of Astronomy and Physics, Saint Mary's University, Halifax, NS B3H 3C2, Canada; TRIUMF, Vancouver, BC V6T 2A3, Canada
- A. Knapton
- Department of Physics, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom
- W. Korten
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France; TRIUMF, Vancouver, BC V6T 2A3, Canada
- K. Kuhn
- Department of Physics, Central Michigan University, Mt Pleasant, MI 48859, USA
- J. Lassen
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- R. Laxdal
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- M. Marchetto
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- A. Matta
- Department of Physics, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom; LPC, ENSICAEN, CNRS/IN2P3, UNICAEN, Normandie Université, 14050 Caen cedex, France
- D. Miller
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- M. Moukaddam
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- N.A. Orr
- LPC, ENSICAEN, CNRS/IN2P3, UNICAEN, Normandie Université, 14050 Caen cedex, France
- N. Sachmpazidi
- Department of Physics, Central Michigan University, Mt Pleasant, MI 48859, USA
- A. Sanetullaev
- Department of Astronomy and Physics, Saint Mary's University, Halifax, NS B3H 3C2, Canada; TRIUMF, Vancouver, BC V6T 2A3, Canada
- C.E. Svensson
- Department of Physics, University of Guelph, Guelph, ON, N1G 2W1, Canada
- N. Terpstra
- Department of Physics, Central Michigan University, Mt Pleasant, MI 48859, USA
- C. Unsworth
- TRIUMF, Vancouver, BC V6T 2A3, Canada
- P.J. Voss
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- Journal volume & issue
-
Vol. 786
pp. 94 – 99
Abstract
The low energy excited 02,3+ states in 96Sr are amongst the most prominent examples of shape coexistence across the nuclear landscape. In this work, the neutron [2s1/2]2 content of the 01,2,3+ states in 96Sr was determined by means of the d(95Sr, p) transfer reaction at the TRIUMF-ISAC2 facility using the SHARC and TIGRESS arrays. Spectroscopic factors of 0.19(3) and 0.22(3) were extracted for the 96Sr ground and 1229 keV 0+ states, respectively, by fitting the experimental angular distributions to DWBA reaction model calculations. A detailed analysis of the γ-decay of the isomeric 03+ state was used to determine a spectroscopic factor of 0.33(13). The experimental results are compared to shell model calculations, which predict negligible spectroscopic strength for the excited 0+ states in 96Sr. The strengths of the excited 02,3+ states were also analyzed within a two-level mixing model and are consistent with a mixing strength of a2=0.40(14) and a difference in intrinsic deformations of |Δβ|=0.31(3). These results suggest coexistence of three different configurations in 96Sr and strong shape mixing of the two excited 0+ states. Keywords: Single-particle structure, Transfer reaction, Shape coexistence
