Positronium Formation in Room Temperature Ionic Liquids

Tetsuya Hirade

doi:10.4028/www.scientific.net/MSF.607.232

Paper Titles

Influence of Temperature on Intratrack Processes and Ps Formation and Behaviour in Liquid Water
p.213

Freezing of Nanodroplets: Phase Transition of Organic Liquids Confined in Nanopores Studied by Positron Annihilation Spectroscopy
p.218

Positron Method for Diagnostics of Carcinogens
p.223

Hydrogen Bonded Supra Molecular Structure as Studied by Positron Annihilation Spectroscopy
p.227

Positronium Formation in Room Temperature Ionic Liquids
p.232

Free Volume Seen by Positronium in Bulk and Confined Molecular Liquid
p.235

Development of Positron Microbeam in AIST
p.238

Development of the Positron Facility at the Argonne National Laboratory’s 20 MeV Linac
p.243

Interlaboratory Comparison of Positron Annihilation Lifetime Measurements
p.248

HomeMaterials Science ForumMaterials Science Forum Vol. 607Positronium Formation in Room Temperature Ionic...

Positronium Formation in Room Temperature Ionic Liquids

Abstract:

Positron annihilation age-momentum correlation measurements (AMOC) were performed for room temperature ionic liquids (IL) to investigate positronium (Ps) formation process. The solvation time of free electrons in IL is longer than in usual molecular liquids. And hence IL is very useful materials to investigate fast reactions such as Ps formation. On the other hand, Ps formation is a good tool to investigate the dry electrons. The para-Ps annihilation lifetime is about 125ps and then the effect of dry electrons should be seen on the S(t) parameters made by the age-momentum correlation measurements. The slow Ps formation was observed in the room temperature ionic liquids.