Antihydrogen formation in low-energy antiproton collisions with excited-state positronium atoms
| Autor: | Ilya I. Fabrikant, C. M. Rawlins, M. Charlton, Igor Bray, Alisher Kadyrov |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Nuclear and High Energy Physics Function (mathematics) Condensed Matter Physics Kinetic energy 01 natural sciences Atomic and Molecular Physics and Optics 010305 fluids & plasmas Positronium Antiproton Excited state 0103 physical sciences Principal quantum number Physics::Atomic Physics Physical and Theoretical Chemistry Atomic physics 010306 general physics Antihydrogen Scaling |
| Zdroj: | Hyperfine Interactions. 239 |
| ISSN: | 1572-9540 0304-3843 |
| Popis: | The convergent close-coupling method is used to obtain cross sections for antihydrogen formation in low-energy antiproton collisions with positronium (Ps) atoms in specified initial excited states with principal quantum numbers ni ≤ 5. The threshold behaviour as a function of the Ps kinetic energy, E, is consistent with the 1/E law expected from threshold theory for all initial states. We find that the increase in the cross sections is muted above ni = 3 and that here their scaling is roughly consistent with ${n_{i}^{2}}$ , rather than the classically expected increase as ${n_{i}^{4}}$ . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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