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Positronium annihilation in silica aerogel studied by a positron age-momentum correlation technique
positron age-momentum correlation positronium formation positron states silica aerogel
2009/8/14
A high-performance positron age-momentum correlation (AMOC) spectrometer was newly developed. The counting rate is increased up to 200 cps much larger than the value 20~cps reported by other internati...