Microchannelhyphen;plate photomultiplier applicability to the timehyphen;correlated photonhyphen;counting method

摘要

A microchannelhyphen;plate photomultiplier (MCPhyphen;PMT) has been applied to the timehyphen;correlated singlehyphen;photon counting technique. Electrical and timing characteristics were investigated for the two types of MCPhyphen;PMTrsquo;s, nonproximity type (Hamamatsu R1264) and proximity type (R1564), which are different in distance between the photocathode and MCP. In the proximity type, the transithyphen;time spread was found to be 60 ps, i.e., a factor of 4 shorter than that in conventional photomultipliers with a dynode string. It was concluded that both types of MCPhyphen;PMTrsquo;s are fully applicable to the singlehyphen;photon counting method and that the proximity type MCPhyphen;PMT in particular leads to further improvements in the cathode transithyphen;time difference and the wavelength effect of the timing properties. Some examples of experimental results are shown for fluorescence decay curves and picosecond timehyphen;resolved spectra.