Physics – Atomic Physics
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3058...99c&link_type=abstract
In NASA, Goddard Space Flight Center, Annihilation in Gases and Galaxies, NASA CP-3058 p 99-107 (SEE N90-18957 11-70)
Physics
Atomic Physics
Angular Correlation, Annihilation Reactions, Particle Production, Photons, Rare Gases, Atomic Collisions, Oxygen, Positronium, Positrons, Quenching (Atomic Physics), Radioactive Decay
Scientific paper
There has been a recent revival of interest in the measurement of angular correlation of annihilation photons from the decay of positrons and positronium in gases. This revival has been stimulated by the possibility offered by the technique to shed new light on the apparently low positronium formation fraction in the heavier noble gases and to provide information on positronium quenching processes in gases such as oxygen. There is also the potential for learning about positronium slowing down in gases. This review focuses on experimental noble gas work and considers what new information has been, and may be, gained from these studies.
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