9-13 July 2012
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=11&confId=14"><font color=#ff0000>SAIP2012 PROCEEDINGS AVAILABLE</font></a>

In-beam spectroscopy of <sup>72</sup>Ge

12 Jul 2012, 14:10
20m
Oral Presentation Track B - Nuclear, Particle and Radiation Physics NPRP

Speaker

Dr David Roux (Rhodes)

Abstract content <br> &nbsp; (Max 300 words)

High-spin states in the nucleus 72Ge were investigated via the 70Zn(α,2n)72Ge reaction at a beam energy of 30 MeV, using the AFRODITE spectrometer. One aim of the study was to search for tetrahedral states. There was no evidence for such states in our coincidence data. The existing decay scheme was substantially revised and extended. Several gamma-ray placements and level spin-parities were changed, and some 30 new transitions were added to the level scheme.
One new negative-parity rotational band was identified. The new band is likely the unfavoured signature partner of the band built on the previously-known I-pi=3- state at 2515 keV. The two negative-parity bands are interpreted as involving an aligned octupole vibration which evolves to a four-quasiparticle structure at higher spins. The upbend in the yrast band is interpreted as the AB neutron alignment.
The band structures are discussed with reference to Cranked Shell Model calculations, the aligned angular momenta, experimental routhians, and moments of inertia.

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD)?

NA

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

NO

Apply to be<br> consider for a student <br> &nbsp; award (Yes / No)?

NO

Main supervisor (name and email)<br>and his / her institution

NA

Primary author

Dr David Roux (Rhodes)

Presentation Materials

Peer reviewing

Paper