Positron drift in molecular hydrogen
- 28 March 1981
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 14 (6) , L227-L232
- https://doi.org/10.1088/0022-3700/14/6/005
Abstract
Measurements of positron drift in H2 gas have been made in the pressure range 10-200 Torr between 0 and 4 Td. A shape analysis gives a universal function W/Zeff. Using the annihilation parameter Zeff=13.6, the drift speed W increases linearly up to 2.9*105 cm s-1 at 1 Td. Above 1.4 Td there is evidence for positronium formation. These are the first measurement of positron drift speeds.Keywords
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