A positron annihilation lifetime measurement system with an intense positron microbeam
2009
Abstract An intense positron microbeam was formed using an electron linear accelerator. The beam is pulsed to apply positron lifetime spectroscopy to very small samples and to obtain positron lifetime images by scanning it. Positron lifetimes are measured with time resolution of 3 s −1 which is 10 times higher than that achieved by the radioisotope based microbeam.
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