GC-MS with photoionization of cold molecules in supersonic molecular beams-Approaching the softest ionization method

2020 ◽  
Vol 55 (9) ◽  
pp. e4516
Author(s):  
Alexander B. Fialkov ◽  
Elias Ikonen ◽  
Tiina Laaksonen ◽  
Aviv Amirav
Keyword(s):  
Molecular Beams ◽  
Cold Molecules ◽  
Supersonic Molecular Beams ◽  
Ionization Method

Dynamics of the reactions of aluminium atoms studied with pulsed crossed supersonic molecular beams

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

SUPERSONIC MOLECULAR BEAMS: II. THEORY OF THE FORMATION OF SUPERSONIC MOLECULAR BEAMS

1965 ◽  
Vol 43 (1) ◽  
pp. 6-17 ◽  
Author(s):  
J. P. Valleau ◽  
J. M. Deckers
Keyword(s):  
Kinetic Theory ◽  
Molecular Beams ◽  
Beam Intensity ◽  
Experimental Results ◽  
Initial Concentration ◽  
Supersonic Molecular Beams ◽  
Mixed Beam ◽  
Heavy Gas ◽  
Better Than

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.

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