ARGON OXIDE EXCIMER EMISSION NEAR 5577 \AA

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1976

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Ohio State University

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The ArO green excimer transition is investigated theoretically. Approximate ArO model potential are constructed for the upper and lower states by adding the attractive long-range dispersion energy to the short-range repulsion calculated ab initio. The bound-bound and thermally averaged free-free and free-bound contributions to the $^{1}\Sigma - ^{1}\Sigma$ and $^{1}\Sigma - ^{1}\Pi$ emission spectra are calculated quantum mechanically using the long-range quadrupole-induced dipole transition moment. The continuum spectrum is also calculated classically and compared to the quantum calculation. The calculated bound-bound spectrum and total two-body emission coefficient are in reasonable agreement with experiment. The blue tail of the continuum emission is calculated to be much weaker than measured, implying a significant departure of the transition moment from its long-range form at distances near the minimum of the upper state potential.

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Author Institution: National Bureau of Standards; National Bureau of Standards

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