Abstract
ABSTRACT We report results of new nucleation experiments involving 1-pentanol with hydrogen as the background gas obtained from constant pressure critical supersaturation measurements and from constant temperature critical supersaturation experiments utilizing the high-pressure diffusion cloud chamber. We continue to observe significant background gas effects upon nucleation that we have reported previously; and we briefly discuss the important issue of stability (the absence of buoyancy-driven convective motion of the gas-vapor mixture) within the cloud chamber. We apply our previously determined criteria for establishing the upper limit of total pressure to be used during nucleation investigations involving thermal diffusion cloud chambers to the experiments described in this report.
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