On the nature of "three-phonon" excitations in 112Cd

H. Lehmann, P. E. Garrett, J. Jolie, C. A. McGrath, Minfang Yeh, S. W. Yates

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

The lifetimes of proposed 3-phonon states in 112Cd have been measured using the Doppler shift attenuation method (DSAM) following the (n,n′γ) reaction. The experimental results allow the determination of relevant B(E2) values which are compared to different theoretical descriptions. Collective enhancements favouring the interpretation of collectivity in the phonon model are observed for 3+ and 4+ members of the 3-phonon quintuplet. However, for the proposed 2+ member, this simple model fails most likely due to the subtle interplay between intruder, mixed-symmetry, and phonon states, and the decay pattern is strongly perturbed. The best overall agreement is obtained with IBM-2 calculations.

Original languageEnglish
Pages (from-to)259-265
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume387
Issue number2
DOIs
StatePublished - Oct 17 1996

Keywords

  • 3-phonon states
  • B(E2) values
  • DSAM
  • IBM
  • Lifetimes
  • Phonon model

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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