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The frequencies and intensities of transitions to Rydberg levels, the direct photoionization cross section, and the angular distribution of photoelectrons of N2 have been calculated for processes associated with Ni(X2In and Ni(A 2n u )' The theoretical model is based on a Hartree-Fock wavefunction for the ground state of N" and excited state wavefunctions derived from an irreducible-tensorial one-center representation of the effective potential of the Ni core. The calculations were carried out for several internuclear distances, especially to try to interpret the dependence of the angular distribution on the final vibrational state.

The interaction of XeF laser radiation at 353 nm with an aluminum target in air at reduced (0.1 Torr) and ambient pressures has been studied. The thermal coupling at moderate fluxes (106–108 W/cm2) and long pulse length at 0.1 Torr was found to be ∼20%. Impulse coupling was also determined.

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