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Summary We carry out a theoretical study of the effect of a strong laser field on charge transfer in collisions of doubly charged helium ions with helium at keV energies, using a close-coupled treatment with a diabatic molecular wave function basis in the semiclassical impact parameter approximation. Our results show significant effects of the laser intensity, wavelength and the orientation of the...
Summary We have shown that the amplification without population inversion (AWOPI) from the first excited autoionizing (AI) state of the1Σg symmetry of the H2 molecules can be obtained when the lowest AI state of the1Σg symmetry is pumped incoherently. We have considered a resonant two-photon transition scheme from the groundX1Σg(v = 0;j = 1) state to the ionization continuum embracing the two...
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