The pre-separation of oxygen containing compounds in oxidised heavy paraffinic fractions and their identification by GC-MS with supersonic molecular beams.

2019 ◽  
Vol 54 (4) ◽  
pp. 328-341
Author(s):  
Hein Potgieter ◽  
Piet de Coning ◽  
Riaan Bekker ◽  
Egmont Rohwer ◽  
Aviv Amirav

ChemInform ◽  
1989 ◽  
Vol 20 (7) ◽  
Author(s):  
J. R. CABLE ◽  
M. J. TUBERGEN ◽  
D. H. LEVY


1987 ◽  
Vol 84 ◽  
pp. 75 ◽  
Author(s):  
Michel Costes ◽  
Christian Naulin ◽  
G�rard Dorthe ◽  
Claude Vaucamps ◽  
Guy Nouchi




1965 ◽  
Vol 43 (1) ◽  
pp. 6-17 ◽  
Author(s):  
J. P. Valleau ◽  
J. M. Deckers

Supersonic molecular beams may be isolated from gas which has been allowed to expand through a nozzle. This paper concerns the kinetic theory of the isolation of such beams, taking into account the effect of collisions in the region between the skimmer and the collimator. These collisions turn out to be important. In particular, they offer an explanation of two interesting phenomena: (a) the existence of a maximum beam intensity as the distance is varied between the nozzle and the collimating system and (b), in a mixed beam, large increases in the intensity of the heavy gas as its initial concentration is reduced by replacement with a much lighter gas. The theory is compared with various experimental results. Although severe approximations have been introduced into the theory, it appears to predict the above phenomena in a way that is better than qualitative.



2001 ◽  
Vol 494 (1) ◽  
pp. 28-42 ◽  
Author(s):  
A.J. McGinnis ◽  
D. Thomson ◽  
R.F. Davis ◽  
E. Chen ◽  
A. Michel ◽  
...  


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