6533b827fe1ef96bd1286dae
RESEARCH PRODUCT
Strong-field high-frequency approximation to the multiphoton ionization of hydrogen
S. BasileF. TrombettaGaetano Ferrantesubject
PhysicsPhotonAbove threshold ionizationStatistical and Nonlinear PhysicsPhotoionizationElectromagnetic radiationAtomic and Molecular Physics and OpticsDipoleElectric fieldQuantum electrodynamicsIonizationPhysics::Atomic PhysicsAtomic physicsCircular polarizationdescription
The strong-field multiphoton ionization of atoms is considered and a theoretical approach dealing nonperturbatively with the radiation field formulated. The general computational scheme is the conventional perturbation theory, but the intermediate states are dressed by the field. We present in detail a method to dress the continuum states and to study the dipole transitions within the continuum. In the high-frequency domain, the proposed procedure rapidly converges over a wide range of field intensity and offers an interesting framework for calculating ionization rates for arbitrary numbers of absorbed (above-threshold) photons and field polarization.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-04-01 | Journal of the Optical Society of America B |