Characterization of a seeded pulsed molecular beam using the velocity map imaging technique

Lietard A.; Poisson L.; Mestdagh J.M.; Gaveau M.A.

doi:10.1063/1.4967576

Journal articles

Characterization of a seeded pulsed molecular beam using the velocity map imaging technique

Lietard A. ^{1, 2} Poisson L. ^{2, 3} Mestdagh J.M. ^{2, 3} Gaveau M.A. ^{2, 3}

1 Korea University [Seoul]

2 LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)

3 DyR - Dynamique Réactionnelle

IRAMIS - Institut Rayonnement Matière de Saclay, LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)

Abstract : An experimental study has been performed to characterize the density and the velocity distribution in a pulsed molecular beam generated by a source associating a pulsed valve and an oven placed just downstream. In its operating mode, the flow is alternatively in a supersonic and effusive regime. The Velocity Map Imaging (VMI) technique associated with laser ionization allows measuring the velocity distribution and the density of molecules as a function of time during the expansion. It gives us a very precise insight into the structure of the molecule bunch, and therefore into the nature of the expansion from which the molecular beam is extracted.

Keywords : Flow visualization Velocity measurement Atomic and molecular beam sources Ionization Ionizing radiation

Document type :

Journal articles

Domain :

Chemical Sciences / Theoretical and/or physical chemistry

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https://hal-cea.archives-ouvertes.fr/cea-01401343
Contributor : Caroline Lebe <>
Submitted on : Wednesday, November 23, 2016 - 11:00:51 AM
Last modification on : Thursday, July 1, 2021 - 4:44:57 PM

Characterization of a seeded pulsed molecular beam using the velocity map imaging technique

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Characterization of a seeded pulsed molecular beam using the velocity map imaging technique

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