OBSERVATION OF PR+ IONS IN PAUL TRAP

The first observation of Pr+ ions stored in a Paul trap is reported. I nitially the ions were observed by tile electronic detection method, a nd further the laser induced fluorescence, following resonance absorpt ion at a certain optical transition in Pr+ ion, which is excited from the ground state, was recorded. Moreover, fluorescence signal followin g the excitation from a low-lying metastable state could be detected. The Paul trap system and some other parts of tile experimental setup w ere constructed within the frame of this work and thus are briefly des cribed in the present contribution.