1. Laser Assisted Antiproton-Hydrogen Collisions.
- Author
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Valencia, Felipe Pérez and Vicario, José Luis Sanz
- Subjects
- *
ATOMIC hydrogen , *ULTRASHORT laser pulses , *ANTIPROTONS , *SCHRODINGER equation , *PROBABILITY theory , *COLLISIONS (Physics) - Abstract
In this work we study excitation processes of atomic hydrogen by antiproton impact within the semiclassical impact parameter eikonal approximation, with and without the presence of laser pulses, in the energy range of 1-300 keV/amu. The time dependent Schrödinger equation is solved with a close-coupling method based on B-splines expansions. Excitation probabilites, even for H(n=2), strongly depend on an appropriate description of the ionization process, that competes efficiently with excitation in this energy range. Furthermore, cross sections may be notably increased when the collisional system is exposed to a laser field. [ABSTRACT FROM AUTHOR]
- Published
- 2009