Abstract

HgCl2 inhibits positronium formation in methanol by quasi - free electron scavenging. Combining the techniques of lifetime spectroscopy and Doppler broadening of the annihilation radiation lineshape, it is shown that this process is followed by a rapid detachment of Cl- ions which react with the positron to form a bound state. These findings have the potential of giving access to some as yet unknown characteristics of the positron spur, such as the distribution and number of the reactive species.

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