Collinear Laser Spectroscopy on Sup(108g,108m) In Using an Ion Source with Bunched Beam Release

摘要

The hyperfine structure and isotope shift of sup(108g)In and sup(108m)In have been investigated by means of collinear fast-beam laser spectroscopy in the resonance line at lambda=451 nm. The indium isotopes were prepared at the GSI on-line mass separator following a fusion evaporation reaction. For the first time, a FEBIAD ion source with bunched release of indium was used. Magnetic dipole moments, electric quadrupole moments and isotope shifts were determined. The present results lead us to assign the spin I=2 to the sup 108 In (Tsub(1/2)=40 min) state. Spins and moments are discussed in the framework of the jj-coupling model. (ERA citation 11:018516)