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A partial-wave analysis of positronium formation in positron - helium scattering
| Content Provider | Scilit |
|---|---|
| Author | Reeth, P. Van Humberston, J. W. |
| Copyright Year | 1997 |
| Description | Journal: Journal of Physics B: Atomic, Molecular and Optical Physics Calculations are made of the s-, p- and d-wave contributions to the positronium formation cross section for positron - helium scattering in the Ore gap. The Kohn variational method is used with very flexible trial functions, and the results obtained are believed to have converged to within 20% of their exact values. In contrast to the findings of a recent analysis of the experimental results for positronium formation, that the p-wave contribution is dominant, the present results show that the d-wave contribution is the largest throughout most of the Ore gap. Nevertheless, the total positronium formation cross sections, calculated from the sum of the variational s-, p- and d-wave contributions and the results of the Born approximation for all higher partial waves, display a very similar energy dependence to that of the experimental results, but are approximately 30% smaller. |
| Related Links | http://iopscience.iop.org/article/10.1088/0953-4075/30/3/001/pdf |
| ISSN | 09534075 |
| e-ISSN | 13616455 |
| DOI | 10.1088/0953-4075/30/3/001 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Issue Number | 3 |
| Volume Number | 30 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1997-02-14 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics B: Atomic, Molecular and Optical Physics Helium Scattering Positronium Formation Formation Cross Experimental Results Partial Waves Wave Contribution Ore Gap |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics |
