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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 106 (1997), S. 9609-9617 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Interaction between the Rydberg electron and a moving ion in the presence of a stray dc electric field is considered. Due to m-mixing and changes in time dynamics of l-mixing, slow thermal motion of the ion has a dramatic effect on the time evolution of the Rydberg electron wave function. This effect can significantly increase the lifetime of the Rydberg level. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0630
    Keywords: 79.20 D ; 81.40 T ; 81.60 B
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We have studied the electric field influence on laser-induced oxidation of metals. A theoretical model is developed to describe the influence of the field on the kinetic law of oxidation. A complicated non-monotonic dependence of oxidation rate as a function of field intensity is predicted.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0630
    Keywords: 81.60 ; 82.50 ; 82.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We present experimental data for vanadium and copper oxidation by cw CO2 laser light in an external electric field. Direct influence of the external field on the crystallisation process has been demonstrated in both vanadium and copper cases; the oxidation rate and surface morphology depend sensitively on the sign and strength of the external field.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of experimental and theoretical physics 84 (1997), S. 760-773 
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It has been established that short-term effects of pulsed magnetic fields initiate long-term low-temperature decay of a supersaturated solid solution of oxygen in silicon crystals grown by the Czochralski method (Cz-Si), which results in the generation of oxygen-containing defects in the form of O-V centers and more complicated SixOyVz complexes, where V is a vacancy. The process of defect formation after the action of the pulsed magnetic fields culminates in the formation of spatially ordered oxygen-vacancy clusters and/or the precipitation of oxide phases, depending on the original defects present in the crystal. The action of such fields also initiates crystallization of an amorphized layer when it is present on the surface of the original crystal. The detected effects are characterized by a threshold field strength, are accumulate with successive pulses, and reach saturation in terms of these parameters of the action. The effects induced in Cz-Si crystals by pulsed magnetic fields are analyzed in terms of a possible cause consisting of the excitation of the Si-O bond of an interstitial oxygen by nonequilibrium population of the vibrational levels of a metastable electronic term of the bond.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of experimental and theoretical physics 91 (2000), S. 899-904 
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A general formula is obtained for the probability of tunneling ionization of an atom accompanied by excitation of the core. This formula is a generalization of the Carlson formula for the probability of a single-photon two-electron transition in atoms. The limiting case of this formula, just as that of the Carlson formula, is the well-known random-perturbations approximation. Numerical results are presented for Zn, Sr, and Cd atoms. For these atoms the contribution of the excited states of singly charged ions to the probability of the formation of doubly charged ions is a nonmonotonic function of the laser radiation intensity. Analysis of the tunneling ionization of molecules shows that with overwhelming probability an ion is formed in the ground vibrational state, while for the standard photoionization the distribution over vibrational states is determined by the Franck-Condon factors.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of experimental and theoretical physics 89 (1999), S. 219-222 
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A formula for describing the N-electron ionization of atoms by a dc field and laser radiation in the tunneling regime is derived theoretically, and numerical examples for noble-gas atoms are presented.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    JETP letters 70 (1999), S. 807-810 
    ISSN: 1090-6487
    Keywords: 72.55.+s ; 43.35.Rw ; 75.50.Dd ; 43.25.Gf
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The phenomenon of energy transfer, both monotonic and oscillating, between the fundamental and higher harmonics of standing acoustic waves is observed during the laser generation of sound in YFeO3 crystals. An analogous phenomenon for traveling light waves is well known in nonlinear optics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of experimental and theoretical physics 85 (1997), S. 61-67 
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The theory of tunneling ionization of atoms is generalized to ionization of symmetric top molecules, either polar or nonpolar. Low-lying excited states of molecules, for which the ordinary Born-Oppenheimer approximation holds, and high-lying excited states, for which the inverse Born-Oppenheimer approximation holds, are discussed. Ionization in a constant external field is analyzed, as is ionization in an alternating field. It is shown that the orientation of the molecule’s axis along the field does not lead to any appreciable increase in the ionization probability as compared to other orientations.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Technical physics 45 (2000), S. 419-422 
    ISSN: 1090-6525
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that a heterogeneous surface reaction affects impurity distribution in the bulk of a solid body. An analytic expression for the concentration of crystal defects as a function of coordinate and reaction time and a diffusion equation in view of this expression were derived. Numerical simulation shows that the impurity concentration varies as ∼exp(-(x/σ)β. Analytic results were compared with experimental data for phosphorus diffusion upon forming nickel silicide.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Technical physics 43 (1998), S. 416-422 
    ISSN: 1090-6525
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this paper two problems are formulated and solved: the problem of diffusion in a two-phase system with a moving boundary, and the problem of taking into account the finite reaction rate for formation of the new phase. A numerical solution is found by a variational method, which has a number of practical advantages.
    Type of Medium: Electronic Resource
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