14-16 November 2011
IPN Orsay
Europe/Paris timezone

In Flight Fast Timing measurements at VAMOS.

15 Nov 2011, 10:50
30m
Auditorium Irène Joliot-Curie (IPN Orsay)

Auditorium Irène Joliot-Curie

IPN Orsay

Speaker

Dr Laurent Gaudefroy (CEA-France)

Description

In septembre 2011 we performed the first In Flight Fast Timing (IFFT) measurements at GANIL on 197Au, 152Sm and 172Yb nuclei presenting 1.9ns, 1.4ns, 100ps and 57ps isomers. States of interest in the target nuclei were populated via Coulomb excitation induced by a 136Xe beam accelerated at 5 A.MeV. Desexcitation gamma-rays were detected using an array consisting on 16 LaBr3 fast scintillators. The recoiling nuclei were identified in the VAMOS large acceptence spectrometer that also served for trajectory reconstruction, mandatory for gamma ray detection efficiency correction. In this talk, I propose to present preliminary results showing that IFFT method is a powerful tool for measuring lifetimes in the range of some tens of ps up to about 10 ns hardly reachable, in flight, using other experimental methods.

Primary author

Dr Laurent Gaudefroy (CEA-France)

Presentation Materials