Time‐resolved luminescence of VUV‐excited liquids and solids

Vacuum ultaviolet radiation is used to study spurs — the groups of ion pairs and excited states that are produced along the tracks of fast particles. Luminescence decays, magnetic field effects and time‐resolved excitation spectra are used to elucidate processes occurring between 1 and 320 ns — the spacing of pulses from the SRS at Daresbury operated in single‐bunch mode. These techniques are illustrated by data for sodium salicylate with photon energies ranging from 4 to 104 eV.