Photoconduction in rare gas fluids doped by small organic molecules

Impurity photoconduction was studied in fluid argon, krypton and xenon doped by one of the following impurities ethane, propane, butane, and benzene. For several impurity/host combinations it was possible to determine, for a wide density range, the energy needed to raise an electron from the ground state of the impurity to the conduction level of the host. The polarization energy P₊ⁱ of the medium by the positive impurity ion was calculated from these results and compared with the Born charging energy formula.