LIFETIME OF THE 2-PHONON VIBRATIONAL-STATE IN TH-232

Authors
KORTEN W BROCKING P HUBEL H POHLER W VANSEVEREN UJ WILLSAU P HAERTLEIN T ENDER C REITER P SCHWALM D GERL J HAPP T KROLL T KASPAR M PETER I SCHREMMER S VETTER K
Citation
W. Korten et al., LIFETIME OF THE 2-PHONON VIBRATIONAL-STATE IN TH-232, ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 351(2), 1995, pp. 143-147
Citations number
17
Categorie Soggetti
Physics, Nuclear","Physics, Particles & Fields
Journal title
ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI → ACNP
ISSN journal
09397922
Volume
351
Issue
2
Year of publication
1995
Pages
143 - 147
Database
ISI
SICI code
0939-7922(1995)351:2<143:LOT2VI>2.0.ZU;2-0
Abstract
We report on a measurement of the lifetime of the 1414 keV stale in Th -232 by the Doppler-shift recoil-distance method. This 4(+) state show s all characteristics of a nearly-harmonic two-phonon gamma-vibrationa l excitation. The result for the B(E2) value obtained from the lifetim e, tau = 3.2 +/- 0.7 ps, is in agreement with an earlier estimate of t he collectivity from Coulomb-excitation yields and supports the interp retation of the 1414 keV state as a two-phonon gamma-vibrational excit ation.