The Quenching of Ortho-Positronium in Helium

The lifetime of ortho-positronium has been m easured in helium at high pressures, yielding a mean quenching rate per atmosphere of 0.0123 A0. (A0 is the natural annihilation rate of ortho-positronium .) This small quenching rate can be explained qualitatively by a pick-off process, in which the posi...

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Veröffentlicht in:	Proceedings of the Royal Society of London. Series A, Mathematical and physical sciences Mathematical and physical sciences, 1962-12, Vol.270 (1343), p.517-524
Hauptverfasser:	Duff, B. G., Heymann, F. F.
Format:	Artikel
Sprache:	eng
Schlagworte:	ANNIHILATION ARGON ATOMS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Coincidence EFFICIENCY ELECTRONS Freon FREONS HELIUM INTERACTIONS LIFETIME MEASURED VALUES Molecules Positron annihilation POSITRONIUM POSITRONS PRESSURE QUENCHING THERMODYNAMICS
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