Transition spectra in the vibrational quasicontinuum of polyatomic molecules: Raman spectra of highly excited UF6 molecules

Spontaneous Raman spectra of highly excited UF6 molecules in the vicinity o f the mode v(1) are studied. The spectra measured are interpreted within th e framework of the model suggested, which presumes the dominant role of sta tistical inhomogeneous broadening in the formation of transition spectra in the vibrational quasicontinuum. A good agreement is obtained between the t heoretical and experimental spectra of UF6 molecules heated to T-vib = 1320 K. The relationships are found between the vibrational energy of the UF6 m olecule and the main parameters of its Raman transitions in the neighborhoo d of the frequency of the mode v(1), such as the intensity, width, and maxi mum positions of their profiles.