Abstract

An intense slow positron beam has been produced for the first time by using a compact proton cyclotron. A slow positron beam intensity of about 2×106 e+/s has been achieved using a proton current of 30 μA. In the near future beam intensities of the order of 107−109 e+/s are expected from this system. In order to apply the slow positron beam from the compact cyclotron to the analyses for material surfaces, two applications are under development. One is variable-energy positron lifetime spectroscopy and the other is polarized positron beam application.

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