EXCESS ELECTRON-MOBILITY IN LIQUID AR-KR AND AR-XE MIXTURES

The mobility of excess electrons in liquified noble gas mixtures Ar-Kr and Ar-Xe has been measured as a function of the solute concentration and of the applied electric field at the normal boiling point of Ar ( T-b = 87.4 K). The experimental results are in strong disagreement wit h the results of a modified deformation potential model, while they ca n be well described within the frame of reference of a gas-kinetic mod el by suitably introducing concentration dependent scattering cross se ctions.