An experimental study of the ice column habit transitionsThe influence of supersaturation on column growth of ice crystals forming from atmospheric water vapor was investigated. A high density of crystals was generated on a glass fiber cooled by liquid N2 in a thermal diffusion chamber. Attention was focused on a neighbor-free hollow prism during a stepwise decrease in supersaturation while the crystal temperature was maintained constant. Another experiment involved epitaxial growth of ice crystals on CuS, where nonthickening crystals could only be grown below -7 C. A critical supersaturation was found to be necessary for growth of the basal plane. Beyound the critical value, surface kinetics do not control the growth rate, which is then dominated by the penetration of water molecules through the diffusion field surrounding the crystal.
Document ID
19830068472
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cho, N. (Nevada Univ. Reno, NV, United States)
Hallett, J. (Nevada, University Reno, NV, United States)