The determination of molecular diffusion coefficients by the barometric method

2008 ◽  
Vol 82 (7) ◽  
pp. 1225-1228 ◽  
Author(s):  
O. A. Kashirskaya ◽  
V. A. Lotkhov ◽  
V. V. Dil’man
Keyword(s):  
Diffusion Coefficients ◽  
Molecular Diffusion

scholarly journals Determination of Diffusion Coefficients from Observations on Grenade Glow Clouds

1963 ◽  
Vol 16 (4) ◽  
pp. 490 ◽  
Author(s):  
ER Johnson ◽  
KH Lloyd
Keyword(s):  
Diffusion Coefficient ◽  
Theoretical Model ◽  
Gaussian Distribution ◽  
Diffusion Coefficients ◽  
Molecular Diffusion ◽  
Particle Density ◽  
Altitude Range ◽  
Explosion Products ◽  
Thin Cloud

Glows have been observed at Woomera when grenades ejected from Skylark rockets have been detonated in the altitude range 90-170 km. Using results obtained from these glows by a special scanning photometer located on the ground, an estimate has been made of the diffusion coefficient in the region 120-160 km. The theoretical model which is used to describe the behaviour of the explosion products incorporates the assumptions of molecular diffusion, a Gaussian distribution of particle density, and an optically thin cloud. The effects of consumption of the cloud particles are included in the model.

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