Photodetachment microscopy in time-dependent fields

Comment on “Photodetachment in combined static and dynamic electric fields”`

Effect of a magnetic field in photodetachment microscopy

The effect of an external static magnetic field of arbitrary orientation with respect to the electric field, on the electron interference ring patterns observed by the photodetachment microscope is studied both experimentally and theoretically. The design of the interaction chamber has been modified to superimpose a controlled uniform magnetic field on the whole volume accessible to the interfe...

Fermion production in time-dependent fields

Institut für Theoretische Physik, J.W. Goethe-Universität, 60054 Frankfurt am Main, Germany and Institut de Recherches Subatomiques, 23 rue du Loess BP 28, 67037 Strasbourg Cedex, France (Dated: October 27, 2003) Abstract The exact fermion propagator in a classical time-dependent gauge field is derived by solving the equation of motion for the Dirac Green’s functions. From the retarded propagat...

Distinguished trajectories in time dependent vector fields.

We introduce a new definition of distinguished trajectory that generalizes the concepts of fixed point and periodic orbit to aperiodic dynamical systems. This new definition is valid for identifying distinguished trajectories with hyperbolic and nonhyperbolic types of stability. The definition is implemented numerically and the procedure consists of determining a path of limit coordinates. It h...

Recurrence Spectroscopy in Time-Dependent Fields

Closed orbit theory is a semiclassical technique for explaining the spectra of Rydberg atoms in external elds. We derive a new version of closed orbit theory that applies when the external elds are time-dependent. We compare the results of this theory with experiments on lithium atoms in a weak oscillating electric eld.