Conduction state energies V0 were measured for liquid neon, argon, krypton, xenon, liquid nitrogen, liquid methane and ethane, and mixtures of methane and ethane by means of photo-effect on a metal electrode. A lower limit of V0 for liquid hydrogen was estimated. From the dependence of the photocurrent on the electric field strength electron penetration ranges could be deduced.

The mobility of excess electrons in liquid mixtures of methane and ethane was measured over the entire range of composition at T=111 °K. Field dependent mobilities were observed at higher field strengths. The data are discussed on the basis of the quasifree and localized electron models.

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The energy of the conduction state in liquid argon, krypton, and xenon was measured by means of the photo-effect. The data are used to calculate the scattering lengths. The relation between scattering length and electron mobility is discussed.

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