J. Mitchell, Westmont College / Michigan State UniversityTitle: Measurement Of The Ground State Magnetic Dipole Moment Of The T=1 Nucleus 32ClAuthors: J. Mitchell, A. Davies, W.F. Rogers (Westmont College); G. Georgiev, N. Coulier, S. Teughels, G. Neyens (University Of Leuven, Belgium); P. Mantica, J. Pond (National Superconducting Cyclotron Laboratory, Michigan State University)Abstract: The first of a two part experiment at the National Superconducting Cyclotron Laboratory at MSU, which combines beta-NMR and beta-LMR spectroscopy, has resulted in a preliminary measurement of the ground state magnetic moment of the 32Cl. This nucleus is a member of a T=1 triplet in the sd-shell, and measurement of its magnetic moment is interesting since isoscalar and isovector components of the magnetic moment operator can be neatly separated. Polarized 32Cl fragments were produced 2o off-axis from a 100Mev/amu 36Ar beam directed at a Nb target, and mass-separated using the A1200. The fragments were then implanted in a cubic NaCl single crystal (cubic symmetry) immersed in an external magnetic field of strength approximately 0.1T and were subjected to an RF field nbsp; We scanned the frequency and monitored the asymmetric b-decay distribution. When the RF frequency matched the Larmor precession frequency the asymmetry dissapeared, from which the magnetic moment could then be calculated. The second part of the experiment will involve implanting the 32Cl nuclei in a non-cubic MgF crystal and performing LMR spectroscopy in order to measure the quadrupole moment as well.This project was supported by the National Science Foundation. |