Properties of 15 2- states in 215 Ra and 217 Th; evaluation of the 15 2- to 9 2+ E3 strength in N = 127 isotones

Published

Journal Article

The lifetime of the yrast 15 2- state in 215Ra was measured using pulsed beams and γ-ray and electron techniques. Transition multipolarities were established from measured conversion coefficients. The B(E3) of the 15 2-→ 9 2+ transition is found to be considerably larger than previously reported. A candidate for the corresponding transition in 217Th was also observed. The E3 strength of the 15 2-→ 9 2+ transition in the N = 127 isotones is evaluated in the light of these and other recent results. Interpretation in the framework of particle-octupole vibration coupling requires a systematic lowering of the core 3- vibration as proton pairs are added to 208Pb. © 1989.

Full Text

Duke Authors

Cited Authors

  • Dracoulis, GD; Riess, F; Stuchbery, AE; Bark, RA; Gupta, SL; Baxter, AM; Kruse, M

Published Date

  • February 27, 1989

Published In

Volume / Issue

  • 493 / 1

Start / End Page

  • 145 - 156

International Standard Serial Number (ISSN)

  • 0375-9474

Digital Object Identifier (DOI)

  • 10.1016/0375-9474(89)90537-X

Citation Source

  • Scopus