Femtosecond coherent anti-Stokes Raman-scattering polarization beat spectroscopy of I2-Xe complex in solid krypton.

摘要: Time-resolved coherent anti-Stokes Raman-scattering (CARS) measurements are carried out to study the interaction between xenon atom and iodine molecule in a solid krypton matrix. Interference CARS polarizations of “free” complexed molecules is observed, while quantum beats complex not detected due low concentration. Vibrational analysis based on polarization yields accurate molecular constants for I2–Xe complex. The harmonic frequency found be redshifted by 0.90cm−1 when compared free I2, whereas anharmonicity approximately same. dephasing rate somewhat higher than that Kr, showing complexation affects dephasing, although dramatically. Molecular dynamics simulations find conformation complex, wave packet used reproduce signal confirm assignments ...