Estimation of thermal accommodation coefficients for inert gases on nuclear materials

1983 ◽  
Vol 54 (10) ◽  
pp. 5990-5992 ◽  
Author(s):  
G. Dharmadurai
Keyword(s):  
Inert Gases ◽  
Nuclear Materials ◽  
Thermal Accommodation ◽  
Accommodation Coefficients

The thermal accommodation coefficients of gases. II. Determinations at room and at liquid-oxygen temperatures

1950 ◽  
Vol 201 (1066) ◽  
pp. 321-329 ◽  
Keyword(s):  
Room Temperature ◽  
Accommodation Coefficient ◽  
Hot Working ◽  
Inert Gases ◽  
Liquid Oxygen ◽  
Square Root ◽  
Thermal Accommodation ◽  
Accommodation Coefficients ◽  
Tungsten Surface ◽  
Helium Neon

The accommodation coefficients of helium, neon, argon, hydrogen and oxygen, on a tungsten surface, are smaller at liquid-oxygen than at room temperature. The accommodation coefficients of the inert gases varies, at both temperatures, approximately as the square root of the atomic weights. The increase in the accommodation coefficient of helium, with the hot-working of the wire observed by Roberts (1930), has not been confirmed for heating times up to 30 hr.

Measurement of the thermal accommodation coefficients of gases

1952 ◽  
Vol 213 (1113) ◽  
pp. 266-273 ◽  
Keyword(s):  
Steady State ◽  
Metal Surfaces ◽  
Recent Literature ◽  
Inert Gases ◽  
Thermal Accommodation ◽  
Accommodation Coefficients ◽  
Thermal Steady State

Widely different values of the accommodation coefficients of inert gases at metal surfaces have been reported in the recent literature, but reasonably concordant results have generally been obtained by different workers when the flashing procedure of Roberts was used. This technique was therefore critically examined by Bremner, who concluded that the low values of Roberts were in error because the original thermal steady state was not attained. If this criticism is valid, then a reassessment of Roberts’s conclusions in the application of them to the chemisorption of gases on metals is necessary. We have therefore investigated, both theoretically and experimentally, the techniques employed by Roberts and Bremner, and have shown that the conclusions given by Roberts are substantially correct.

An experimental assembly for precise measurement of thermal accommodation coefficients

2011 ◽  
Vol 82 (3) ◽  
pp. 035120 ◽  
Author(s):  
Wayne M. Trott ◽  
Jaime N. Castañeda ◽  
John R. Torczynski ◽  
Michael A. Gallis ◽  
Daniel J. Rader
Keyword(s):  
Precise Measurement ◽  
Thermal Accommodation ◽  
Experimental Assembly ◽  
Accommodation Coefficients

scholarly journals Measurement of Thermal Accommodation Coefficients Using Laser-Induced Incandescence

2007 ◽  
Author(s):  
K. J. Daun ◽  
P. H. Mercier ◽  
G. J. Smallwood ◽  
F. Liu ◽  
Y. Le Page
Keyword(s):  
Deformation Rate ◽  
Surface Deformation ◽  
Accommodation Coefficient ◽  
Polyatomic Gases ◽  
Thermal Accommodation ◽  
Laser Induced Incandescence ◽  
Translational Mode ◽  
Accommodation Coefficients ◽  
Thermal Accommodation Coefficient ◽  
Gas Molecules

Laser-induced incandescence (LII) is used to measure the thermal accommodation coefficient between soot sampled from a well-characterized flame and various monatomic and polyatomic gases. These measurements show that the thermal accommodation coefficient between soot and monatomic gases increases with molecular mass due to the decreasing speed of incident gas molecules and corresponding decrease in surface deformation rate, and that energy is transferred preferentially from the surface to the translational mode of the polyatomic gas molecules over internal energy modes.

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