Ionization of Atoms in a Thermal Field

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...

Ionization of many-electron atoms by a quasistatic electric field

We present a general expression for the field ionization probability of atoms and ions under a quasistatic external electric field. While the treatments available as yet are only for the case of a single electron in the outer nl subshell, the expression obtained here is applicable to atoms and ions with any number of electrons in the outer subshell and with partially filled inner subshell~s!. W...

Electron Drift Directions in Strong-Field Double Ionization of Atoms

Longitudinal momentum spectra and electron drift directions are considered for several laser wavelengths in Non-Sequential Double Ionization of helium using three dimensional classical ensembles. In this model, the familiar doublet for wavelength 800 nm and intensities of order 5x1014 W cm−2, becomes a triplet for wavelength 1314 nm, then a doublet with plateau for 2017 nm. The results are expl...

Calculation of state selective field ionization of hydrogen atoms in a strong magnetic field

We have performed classical and quantum calculations for a hydrogen atom in a strong magnetic field exposed to a parallel electric field that linearly increases with time. The calculations were performed for the situation where the electron is launched from near the nucleus and for a microcanonical ensemble. For the case of low angular momentum, the classical and quantum calculations are compar...

Radiation Dynamics from the Ultra-Intense Field Ionization of Atoms