J. Phys. IV France 03 (1993) C4-127-C4-130
Effects of scavengers on short-lived ortho-PsT. HIRADE and O.E. MOGENSEN
Department of Chemistry and Fuel Research, Japan Atomic Energy Research Institute, Tokai, Naka, Ibaraki, 319-11, Japan
Positron lifetime spectra are usually analyzed with three exponentially decaying components, para-Ps (positronium), free positron and ortho-Ps. However, a fourth component was obtained in many liquids. We reported the first results of the inhibition of the fourth component by CCl4 in hexane and proposed a model. We show that the effects of several electron and positive ion (hole) scavengers, such as CS2, C6F6, SF6 and pyridine on the fourth component are successfully explained with this model.
© EDP Sciences 1993