R. Calabrese et al., ULTRASHORT LASER-PULSE DIAGNOSTICS FOR DETECTION OF ORDERING WITHIN AN ION-BEAM, Hyperfine interactions, 99(1-3), 1996, pp. 267-276
A novel diagnostic method to detect ordering within one-dimensional io
n beams in a storage ring is presented. The ions are simultaneously ex
cited by a ultrashort pulsed laser (similar or equal to 1 ps) at two d
ifferent locations along the beam and fluorescence is detected by a gr
oup of four photomultipliers. Correlation in fluorescence signals is a
firm indication that the ion beam has an ordered structure.