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an atom
Tensor structure of the stationary point of the radiative relaxation operator of an atom
      
The nonlinear dynamics of an open quantum system consisting of a "dressed" atom, i.e., an atom coupled with an external multifrequency electromagnetic field, and a single quantized mode of an electromagnetic field is studied.
      
The fact that the field acting on an atom differs from the macroscopic field in the film is also taken into consideration.
      
The dynamics of the quantum-statistical properties of the radiation of an atom in a cavity interacting with an external coherent field is investigated.
      
By numerically solving the Schro dinger equation, we have calculated energy levels of H(1s), H*(n=2), and C5+(n) as functions of the distance between an atom and surface.
      
Interaction of an atom with superstrong laser fields
      
We study the effect of diamagnetic interaction on the probability of radiative transitions of an atom from states split by a field.
      
It is shown that the rate and degree of ionization of an atom can be controlled by preparing a specific superposition of Rydberg states.
      
Calculations are made of the energy and angular distributions of photoelectrons during tunneling ionization of an atom or an ion under the action of high-power laser radiation (for all values of the Keldysh parameter γ).
      
Effect of the diamagnetic interaction on the intensity of the radiation lines of an atom in a magnetic field
      
A general formula is obtained for the probability of tunneling ionization of an atom accompanied by excitation of the core.
      
The radiation relaxation operator is obtained for the D-line of alkali metals in the case when an atom is near the metal surface.
      
The shape of spectral lines is determined from the solution of the quantum-mechanical problem on the emission of an atom in the electric field of the plasma and an external magnetic field, taking the Doppler effect into consideration.
      
The constant of hyperfine interaction in an acceptor center formed by an atom of aluminum in silicon is estimated for the first time: |Ahf (Al)/2π| ~ 2.5×106s-1.
      
At resonance, the emission probability of a moving atom can considerably exceed the emission probability of an atom at rest.
      
Single-photon double ionization of an atom in a strong radiation field
      
The partial wave analysis of two-photon free-free (bremsstrahlung) electron transition cross sections during scattering by a static potential U(r), as well as by an atom with a nonzero angular momentum, is carried out.
      
The dipole interaction of an atom with the cooling and compressing laser field in a quadrupole magnetic field is analyzed in terms of a simple (3 + 5)-level model atom.
      
The dynamics of spontaneous radiation of an atom is investigated.
      
Emission and electron transitions in an atom interacting with an ultrashort electromagnetic pulse
      
 

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