Appearing and disappearing strong-field (2d+time) resonances in H atoms
Abstract
When excited hydrogen atoms are driven by collinear static and microwave electric fields, we discover a series of strong-field resonances that can ionize most substates with a given principal quantum number n0. We describe a quantal theory using an adiabatic basis that explains the origin of the resonances and why they disappear at certain ratios of the two fields. Our three-dimensional classical Monte Carlo calculations reproduce this behavior. We demonstrate n selectivity sufficient for continued development of this process as a practical detector.
- Publication:
-
Physical Review A
- Pub Date:
- June 2000
- DOI:
- 10.1103/PhysRevA.61.060101
- Bibcode:
- 2000PhRvA..61f0101G
- Keywords:
-
- 32.80.Rm;
- 31.15.Gy;
- 42.50.Hz;
- Multiphoton ionization and excitation to highly excited states;
- Semiclassical methods;
- Strong-field excitation of optical transitions in quantum systems;
- multiphoton processes;
- dynamic Stark shift