Development of a pulsed system for ion desorption studies from polymers irradiated with multi-bunch synchrotron radiation

With the aim of performing time-of-flight studies of photon stimulated ion desorption (PSID) from polymers irradiated with the synchrotron radiation emanating from the Brazilian Synchrotron Light Source (LNLS), normally operated in a multi-bunch mode, a pulsed system has been developed. The new pulsed system uses as a trigger for the experiments the pulsed extraction high voltage applied to the sample. PSID results for poly(methyl methacrylate) (PMMA) and poly(vinyl chloride) (PVC) obtained at the TGM beam line (12-310 eV) of LNLS are presented.