LINESHAPE ANALYSIS OF IMPURITY RYDBERG TRANSITIONS IN VAN-DER-WAALS SOLIDS - DERIVATION OF INTERMOLECULAR POTENTIALS

Fluorescence depletion spectra of the A (2)Sigma(+)(3s sigma) Rydberg fluorescence of NO in rare-gas and hydrogen matrices are reported in t he 0.9-1.3 eV region. Bands due to the Rydberg-Rydberg A (2)Sigma(+)(3 s sigma)-C (2)Pi(3p pi) and A (2)Sigma(+)(3sa sigma)-D (2)Sigma(+)(3p sigma) transitions are observed. These spectral features are combined with ground-state absorption data of the A, C and D states and with A- state fluorescence data to generate a set of intermolecular potentials describing the impurity-matrix interaction in each state. The effecti ve mode and harmonic approximations are made and the semiclassical ref lection method is used. (C) 1998 Elsevier Science B.V. All rights rese rved.