Anomalous cooling of the parallel velocity in seeded beams

Anomalous cooling of the parallel velocity in seeded beams

We have measured the parallel velocity distribution of a lithium supersonic beam produced by seeding lithium in argon. The parallel temperature for lithium is considerably lower than the calculated parallel temperature of the argon carrier gas. We have extended the theory of supersonic cooling to ca...

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Veröffentlicht in:Physical review. A 2004-09, Vol.70 (3), Article 030701
Hauptverfasser: Miffre, A., Jacquey, M., Büchner, M., Trénec, G., Vigué, J.
Format: Artikel
Sprache:eng
Schlagworte:
ARGON
ATOM-ATOM COLLISIONS
ATOMIC AND MOLECULAR PHYSICS
ATOMIC BEAMS
COOLING
DISTRIBUTION
LITHIUM
Physics
VELOCITY
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Zusammenfassung:We have measured the parallel velocity distribution of a lithium supersonic beam produced by seeding lithium in argon. The parallel temperature for lithium is considerably lower than the calculated parallel temperature of the argon carrier gas. We have extended the theory of supersonic cooling to calculate the parallel temperature of the seeded gas, in the limit of high dilution. The theoretical result thus obtained is in good agreement with our observations.
ISSN:1050-2947
2469-9926
1094-1622
2469-9934
DOI:10.1103/PhysRevA.70.030701