Phase-dependent ionization of Rydberg atoms in static fields

Pulsed field ionization of Rydberg atoms

Fully quantum and classical trajectory Monte Carlo calculations are performed for a Rydberg alkali atom that is kicked by a pulsed electric field. The two calculations are compared to recent experimental results through the ionization probability versus peak field strength. The energy distribution of the final electrons are compared between the two calculations. There is a qualitative differenc...

Rydberg atoms in low - frequency fields

2 00 9 Ionization of Rydberg atoms by blackbody radiation

We have studied ionization of alkali-metal Rydberg atoms by blackbody radiation (BBR). The results of theoretical calculations of ionization rates of Li, Na, K, Rb and Cs Rydberg atoms are presented. The calculations have been performed for nS, nP and nD states for principal quantum numbers n=8-65 at ambient temperatures of 77, 300 and 600 K. The calculations take into account the contributions...

Ionization of Rydberg Atoms by a Stark Kick

We provide a rigorous lower bound for the ionization probability of a Rydberg atom under the perturbation by a time-dependent electric eld in the form of an ultrashort pulse idealized as a Dirac-function. This estimate is of the form 1 ? O(F ?4 0) for large values of the electric eld F 0. For the hydrogen atom we also prove the scaling behavior F 0 n ?1 , predicted recently by Reinhold et al. P...

Electron impact ionization of sodium Rydberg atoms below 2 eV.

We have observed electron impact ionization of highly excited sodium Rydberg atoms in ns and nd states, n=35-51, below E=2 eV electron kinetic energy with energy resolution 0.25 eV. Measured absolute cross sections near 0 eV range from sigma(35d) approximately 7 x 10(-10) to sigma(50d) approximately 4 x 10(-9) cm(2). The energy dependence is consistent with that of widely used binary encounter ...