A new technique for the determination of heats of sublimation of slightly volatile substances /

A technique is described which enables one to measure relative vapor pressures by measuring the rate of change of transmissivity of thin deposits as they are formed by condensation from the vapor. From the temperature dependence of this rate the heat of sublimation of slightly volatile substances can be determined. In the case of graphite, deposits of the order of 0.1 microgram per sq cm can be detected.Work performed at the Argonne National Laboratory."Date Declassified: June 28, 1948."Title from cover.Includes bibliographical references.A technique is described which enables one to measure relative vapor pressures by measuring the rate of change of transmissivity of thin deposits as they are formed by condensation from the vapor. From the temperature dependence of this rate the heat of sublimation of slightly volatile substances can be determined. In the case of graphite, deposits of the order of 0.1 microgram per sq cm can be detected.Mode of access: Internet