Sharp Spectral Lines Observed in g-Ray Ionized Parahydrogen Crystals
نویسندگان
چکیده
We have observed sharp infrared spectral lines (Dn 60 MHz FWHM) in g-ray ionized para-H2 crystals. The lines are assigned to the Q1 0 transition of H2 near H3 and H, which becomes optically active and Stark shifted by the Coulomb fields of the ions. A simple model calculation gives a spectrum which agrees approximately with the observation. The spectrum stays the same over many days, demonstrating the stability of the ionized system. The remarkable sharpness and reproducibility of the line positions indicate uniformity of the local structure surrounding the charges.
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