Ionization suppression can be defined as the decrease of photoinduced atomic ionization rates with an increased applied field intensity. The temporal and spatial intensity distribution of a focused laser pulse introduces difficulty in observing ionization suppression. An analysis of the effect of a temporally Gaussian laser pulse on ionization suppression from Rydberg levels is given. It is fou...

Helium and other atoms can, in principle, become doubly ionized when exposed to an intense laser pulse through two different channels: a direct process whereby both electrons are ejected simultaneously from the atom and a sequential process whereby the second charge state is created only after the first charge state. Crance and Aymar [1] calculated for He that if the number of photons required ...

We theoretically investigate the electronic dynamics in the hydrogen molecular ion at fixed intermediate internuclear distances in two-dimensional space for the electron in a linearly polarized laser field. Our results of numerical simulations confirm the predictions of multiple bursts of ionization within a half cycle of the laser field oscillation as recently reported for one-dimensional mode...

Using a semiclassical model, we investigate frustrated double ionization (FDI) in D3+, a two-electron triatomic molecule, when driven by an intense, linearly polarized, near-infrared (800 nm) laser field. We compute the kinetic energy release of the nuclei and find a good agreement between experiment and our model. We explore the two pathways of FDI and show that, with increasing field strength...

We present a further development of an analytical model for the tunneling ionization of atoms by a lowfrequency laser field of an arbitrary strength, including the strong-field region. The model uses a very accurate approximation of the true ionization barrier/potential in the Schrödinger equation by the effective parabolic barrier/ potential-based on the algorithm suggested by Miller and Good ...

Using sequential strong-field double ionization in a pump-probe scheme we show through calculations how electronic dynamics can be prepared and imaged. Electronic dynamics arise whenever multiple states of the ion are accessed in the ionization step. The dynamics in the cation influence the rate of the second ionization step and the momentum distribution of the ejected electron, allowing their ...

The design of a detector for Rydberg Hydrogen atoms, capable of probing the distribution of n-states is investigated. The device is needed for the construction and commissioning of the AEgIS-apparatus at CERN, aiming to measure the gravitational interaction between matter and antimatter. The detector works by field ionizing the H atoms and consequently detecting the liberated electrons. Informa...