Abstract
We have developed a time-of-flight mass spectrometer which is now under operation at HiSOR storage ring for research of photon stimulated ion desorption (PSID). The employment of the pulsed high voltage method as a trigger allowed us to perform the investigations at a multi bunch operation of the storage ring. The performance of this spectrometer was evaluated by applying to the PSID measurements of PMMA (poly-methylmethacrylate) thin films. The results are compared with those obtained at Photon Factory by using pulsed synchrotron radiation in a single bunch operation. The capabilities of the apparatus for ion desorption studies are discussed.
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