Probing Quantum Solvation with Infrared Spectroscopy: Infrared Activity Induced in Solid Parahydrogen by N2 and Ar Dopants.

摘要

We present high-resolution infrared absorption spectra of solid parahydrogen matrices containing low concentrations of N2 or Ar impurities. The spectra reveal dopant-induced absorption features that acquire infrared activity through short-range isotropic vibrational transition dipole moments arising from dopant-H2 intermolecular interactions. These dopant-induced features provide new insights into the perturbation of the vibron bands of the H2 matrix by chemical impurities, and thus into the physics of solvation in a quantum solid.