Abstract
The starting point of this experiment, a pulsed, supersonic Even-Lavie valve, yields an extremely intense and directional beam of neon. Compared to their effusive counterparts, supersonic beams are significantly brighter and colder, but they also have higher mean velocities. It is worth spending a few pages to investigate the formation and behavior of these sources, which are increasingly crucial tools in atomic and molecular physics.
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Notes
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“Cette expérience prouve d’abord que la matière en mouvement qui va former le dépôt H ne contourne pas les obstacles, comme le ferait ce qu’on a l’habitude d’appeler un jet de gaz qui formerait des remous derrière eux de manière à ne pas laisser d’espace vide. De plus il est facile de reconnaître que la propagation de cette matière se fait en ligne droite.”
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Gardner, J.R. (2018). Supersonic Beams. In: Neutral Atom Imaging Using a Pulsed Electromagnetic Lens. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-68430-7_2
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DOI: https://doi.org/10.1007/978-3-319-68430-7_2
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