Dr
Georgi Georgiev
(CSNSM, Orsay, France)
17/11/2008, 16:20
The possibility of obtaining spin-polarized nuclei is an essential asset for performing nuclear physics experiments with radioactive nuclei. The nuclear magnetic-dipole and electric quadrupole moments are of key importance for the profound understanding of the nuclear structure, especially when one moves away from the stability line. Obtaining an ensemble of polarized nuclei is a primary...
Lara Risegari
(Cen. de Spect. Nucl. & Spect. Masse (CSNSM)-91405 Orsay Campus-France)
17/11/2008, 16:50
In a recent experiment at the NICOLE on-line nuclear orientation facility, gamma decay anisotropy and nuclear magnetic resonance measurements were made on Hf isotopes. A HfF3 beam was used to implant separated Hf isotopes into a magnetized pure iron foil cooled to temperatures down to 15 millikelvin.
NMR/ON resonance was observed in the 37/2- K-isomer of 177Hf and angular distributions...
Nathal Severijns
(Kath. Univ. Leuven)
17/11/2008, 17:10
A new method to determine the beta asymmetry parameter in the decay of polarized nuclei was developed. The nuclei are polarized with the low temperature nuclear orientation method and beta particles are observed with Si and Ge detectors operating inside the 4 Kelvin part of the nuclear orientation set-up. Essential to the method is further the newly developed Geant4 based Monte Carlo code for...
J. N. Goncalves
(Universidade de Aveiro, Physics Department and CICECO, Aveiro 3810-193, Portugal)
17/11/2008, 17:30
We report on perturbed angular correlation (PAC) spectroscopy studies on magnetic compounds BaMnO3 and MnAs. Hyperfine parameters, e.g., the local Electric Field Gradient and Hyperfine Magnetic Field were measured by using the isotope probes 111Cd in BaMnO3 and 77Se in MnAs. MnAs was measured in a short range of temperatures near the first order magneto-structural transition at T=45 C. For the...
