Precision Microwave Spectroscopy of the Positronium Fine Structure
We report a new measurement of the positronium (Ps) 2 S 3 1→ 2 P 3 0 interval. Slow Ps
atoms, optically excited to the radiatively metastable 2 S 3 1 level, flew through a microwave …
atoms, optically excited to the radiatively metastable 2 S 3 1 level, flew through a microwave …
Measurement of the fluorescence decay rate of positronium
RJ Daly, RE Sheldon, DB Cassidy - Physical Review A, 2024 - APS
The fluorescence decay rate of 2 PJ 3 positronium (Ps) atoms [Γ fl] has been experimentally
determined using a Stark-mixing technique. Ground-state Ps atoms were optically excited in …
determined using a Stark-mixing technique. Ground-state Ps atoms were optically excited in …
Observation of orthopositronium thermalization in silica aerogel at cryogenic temperatures
We report ortho positronium (o-Ps) thermalization observed in cryogenic silica aerogel
cooled from room temperature to 25 K. It was observed that the o-Ps thermalization rate gets …
cooled from room temperature to 25 K. It was observed that the o-Ps thermalization rate gets …