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Feasibility study of a positron lifetime spectrometer for measurements of porous and polymer films with a DC positron beam
(2004)LAPP-EXP-2004.07 and INR-HEP-2004.30Positron Annihilation Lifetime Spectroscopy (PALS) is an increasingly im- portant analysis technique that can be efficiently used to characterize the free volume sizes in porous silica and polymer thin films. In this document a design of a non-expensive lifetime spectrometer to mea- sure positron annihilation lifetime spectra in thin films with a continuous (DC) magnetically guided slow positron beam is described. The ...Other Publication