Varying the Condensable Water Vapor Content in an Expansion Cloud Chamber
We have investigated using a water and tetraethylene glycol mixture to reduce, substantially, the equilibrium vapor pressure of water in our expansion cloud chamber. The experiments were performed with a mixture that reduced the water vapor content to 2.5% relative humidity. They verify that the chamber with this mixture can be expanded to temperatures from -30° C to -40° C accompanied by water vapor pressures from below saturation to supersaturation ratios up to 1.6. The experiments indicate that the very low concentration of tetraethylene glycol in the vapor does not influence the water nucleation process.
J. L. Schmitt and D. E. Hagen, "Varying the Condensable Water Vapor Content in an Expansion Cloud Chamber," Atmospheric Research, vol. 31, no. 1-3, pp. 91-98, Elsevier BV, Jan 1994.
The definitive version is available at http://dx.doi.org/10.1016/0169-8095(94)90035-3
Keywords and Phrases
Cloud Chamber; Condensation; Water Vapour Content
International Standard Serial Number (ISSN)
Article - Journal
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