Ground-state magnetic moment of the T=1 nucleus Cl-32 using on-line beta-NMR spectroscopy - art. no. 044312

The magnetic dipole moment of the 1(+) ground state of the T = 1 nucleus C- 32(17)15 has been measured to be mu = 1.114(6)mu(N) using conventional beta -NMR spectroscopy. Polarized Cl-32 nuclei were produced by fragmentation of a 100 MeV/nucleon Ar-36 beam in a 642 mg/cm(2) Nb-93 target, where the bea m was incident on the target at an angle 2.5 degrees to the normal beam axi s. The desired Cl-32 fragments were filtered from ether fragmentation produ cts using the A1200 fragment separator and implanted in a NaCl single cryst al, maintained at room temperature, at the center of a beta-NMR apparatus. The Larmor frequency was determined by measuring the beta-decay asymmetry a s a function of the applied radio-frequency field. Isoscalar and isovector moments for the A = 32, T = 1 isospin multiplet are extracted and compared with large-basis shell model calculations.