Armitage, S;
Leslie, DE;
Garner, AJ;
Laricchia, G;
(2002)
Fragmentation of positronium in collision with He atoms.
PHYS REV LETT
, 89
(17)
, Article 173402. 10.1103/PhysRevLett.89.173402.
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Abstract
The absolute cross section for the fragmentation of positronium in collision with He atoms has been measured. The results are compared with available theories. The longitudinal energy distributions of positrons resulting from fragmentation have also been determined and are found to display a peak situated just below half the residual energy. This is suggestive of the occurrence of "electron loss to the continuum" in which the two residual charged particles lie in a low relative-velocity Coulomb-continuum state.
| Type: | Article |
|---|---|
| Title: | Fragmentation of positronium in collision with He atoms |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.89.173402 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.89.173402 |
| Language: | English |
| Keywords: | CLOSE-COUPLING APPROXIMATION, DIFFERENTIAL CROSS-SECTIONS, IMPACT IONIZATION, SCATTERING, HYDROGEN, GASES, BEAM, EXCHANGE, HELIUM, H-2 |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/9715 |
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