Speaker
Description
In a collabortation between Centre de Sciences Nucléaires et de
Sciences de la Matière (CSNSM) and Institut de physique nucléaire
d'orsay (IPNO) a so-called Plunger device used for Recoil Distance
Doppler Shift measurements and Time Differential Recoil-in-Vacuum
measurements for g-factor measurements has been developed.
I will present the device, in the forefront of the transition from two
motor technology to that of using a single Piezo electric step
motor. This will be followed by the presentation of the major
experimental campaigns in which the OUPS has been used:
1 - Campaign at the ALTO facility using the ORGAM HPGe detector array.
2 - Campaign at the ALTO facility using the MINORCA detector array.
3 - Campaign at the GANIL facility using the AGATA HPGe detector array
combined with the VAMOS spectrometer.
The physics addressed is varied ranging from shape coexistence in the
neutron deficient Osmium isotopes to lifetime measurements close to
$^{208}$Pb passing by shell evolution for neutron rich nuclei close to
N=40 and N=50. Both published and not published result will be
presented.
I will end with a few words about the immediate future of the use of
version of the OUPS to be used at AGATA together with the NEDA neutron
detector and DIAMANT charged particle detector and possible prospects
for lifetime measurements for very heavy nuclei with the AGATA+VAMOS
gas filled combination at GANIL.
