Masters Theses

Abstract

"Absolute homogeneous nucleation rates in a supersaturated mixture of water vapor and helium are measured using a long sensitive time expansion chamber and a method devised by Kassner and Allard. A pulse technique is employed to produce the nucleation in an effort to suppress disturbing influences of vapor depletion and droplet growth. The time-varying nature of the supersaturation during the nucleation pulse is taken into account by an Integration over the pulse. Observed and theoretically predicted droplet concentrations are related by an assumed nucleation rate law which is adjusted until the total droplet populations predicted by integration of the assumed law agree with experiment to within ±10%. The empirical nucleation rate law that results from this analysis is compared to the theoretical results of Becker and Dorlng, Frenkel and Courtney. The classical calculation of Becker and Dorlng is presented in detail."

Advisor(s)

Kassner, James L.

Committee Member(s)

James, William Joseph
Lund, Louis H., 1919-1998
Lee, Ralph E., 1921-2010

Department(s)

Physics

Degree Name

M.S. in Physics

Comments

This research was supported by the Atmospheric Sciences Section of the National Science Foundation, NSF Grant GP-2893.

Publisher

University of Missouri at Rolla

Publication Date

1965

Pagination

vii, 90 pages

Note about bibliography

Includes bibliographical references (pages 87-89).

Rights

© 1965 Raymond J. Schmitt, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Nucleation
Helium
Water

Thesis Number

T 1684

Print OCLC #

5963749

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