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A modified adiabatic approach to positron-atom and positron-molecule polarisation potentials: application to positron-He scattering
| Content Provider | Scilit |
|---|---|
| Author | Gibson, T. L. |
| Copyright Year | 1990 |
| Description | Journal: Journal of Physics B: Atomic, Molecular and Optical Physics A novel treatment of short-range correlation effects designed for use in calculating positron-atom and positron-molecule polarisation potentials is presented. The treatment is based on a physically motivated approximation that mimics the effect of the dominant non-adiabatic correction to the adiabatic potential at low scattering energies, namely virtual positronium formation. As an initial test of the method, positron-He scattering phaseshifts, scattering length and differential cross sections have been calculated and found to be in good agreement with accurate results. This method is immediately extendible to positron-molecule collisions and does not require significantly more work than a purely adiabatic treatment. |
| Related Links | http://iopscience.iop.org/article/10.1088/0953-4075/23/4/010/pdf |
| Ending Page | 776 |
| Page Count | 10 |
| Starting Page | 767 |
| ISSN | 09534075 |
| e-ISSN | 13616455 |
| DOI | 10.1088/0953-4075/23/4/010 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Issue Number | 4 |
| Volume Number | 23 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1990-02-28 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics B: Atomic, Molecular and Optical Physics Atom and Positron Positron Molecule |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics |
