Structure of the Kπ = 4+ bands in 186,188Os.

Autor: Phillips, A. A., Garrett, P. E., Bettermann, L., Braun, N., Burke, D. G., Demand, G. A., Faestermann, T., Finlay, P., Green, K. L., Hertenberger, R., Krücken, R., Leach, K. G., Schumaker, M. A., Svensson, C. E., Wirth, H.-F., Wong, J.
Předmět:
Zdroj: AIP Conference Proceedings; 1/28/2009, Vol. 1090 Issue 1, p342-346, 5p, 1 Chart, 2 Graphs
Abstrakt: The structures of 3+ states in Os have been debated over several decades. Based on measured B(E2) values they were interpreted in 186–192Os as Kπ = 4+ two-phonon vibrations, whereas inelastic scattering, and (t,α) work imply a hexadecapole phonon description. To clarify the nature of these Kπ = 4+ bands in 186,188Os, we performed a (3He,d) reaction on 185,187Re targets using 30 MeV 3He beams and a Q3D spectrograph. Absolute cross sections were obtained for excited states up to 3 MeV at 9 angles from 5° to 50°. Results indicate a significant 52+[402]π+32+[402]π component in agreement with quasiparticle phonon model predictions for a single hexadecapole phonon structure. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index