Nuclear Instruments & Methods in Physics Research A vol:612 issue:1 pages:112-121
A new beta-NMR/beta-NQR setup is developed to study nuclear magnetic dipole moments and electric quadrupole moments at the USE fragment separator at GANIL Two key elements make the new design very powerful: the homogeneous magnet and the strong radio-frequency amplifier. The combination of both makes it possible to examine a broad spectrum of magnetic dipole and electric quadrupole moments. Several factors have an influence on the detection efficiency and on the sensitivity of the setup to observe a resonant change in the beta-asymmetry: the thickness and the tilting angle of the implantation crystal, the material in the vacuum chamber, the applied magnetic field and the Q(beta)-value of the decaying nuclei. A detailed study of these effects is made using a dedicated GEANT4 Monte Carlo simulation code. (C) 2009 Elsevier B.V. All rights reserved.