CaltechTHESIS
  A Caltech Library Service

Experimental determination of accommodation coefficients as functions of temperature for several metals and gases

Citation

Oliver, Robert Norris (1950) Experimental determination of accommodation coefficients as functions of temperature for several metals and gases. Engineer's thesis, California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-02092009-080824

Abstract

NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document.

The accommodation coefficients for the gases and metals tested vary rapidly in the range where the gas temperature is within approximately 50°C of the filament temperature.

When the temperature excess becomes large, the [...] of argon, nitrogen and helium on platinum is approximately .7, .5 and .2, respectively, and on tungsten approximately .5, .35 and .15, although the actual value depends upon both filament and gas temperature.

Variation in pressure up to 150 microns was found to have a negligible effect on [...].

All gases and metals tested gave smooth curves of [...] versus temperature except helium on tungsten at a gas temperature of 80° K., which exhibited a sharp discontinuity at a filament temperature of approximately 225° K. and a pressure of 34 microns.

Item Type:Thesis (Engineer's thesis)
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Tsien, Hsue Shen
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1950
Record Number:CaltechETD:etd-02092009-080824
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-02092009-080824
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:578
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:10 Feb 2009
Last Modified:26 Dec 2012 02:30

Thesis Files

[img]
Preview
PDF (Oliver_rn_1950.pdf) - Final Version
See Usage Policy.

6Mb

Repository Staff Only: item control page