A continuous source of translationally cold dipolar molecules

The Stark interaction of polar molecules with an inhomogeneous electric field is exploited to select slow molecules from a room-temperature reservoir and guide them into an ultrahigh vacuum chamber. A linear electrostatic quadrupole with a curved section selects molecules with small transverse and l...

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Bibliographic Details
Published inarXiv.org
Main Authors Rangwala, S A, Junglen, T, Rieger, T, Pinkse, P W H, Rempe, G
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 13.12.2002
Subjects
Ammonia
Computer simulation
Deuteration
Inhomogeneous electric fields
Monte Carlo simulation
Quadrupoles
Ultrahigh vacuum
Vacuum chambers
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Summary:The Stark interaction of polar molecules with an inhomogeneous electric field is exploited to select slow molecules from a room-temperature reservoir and guide them into an ultrahigh vacuum chamber. A linear electrostatic quadrupole with a curved section selects molecules with small transverse and longitudinal velocities. The source is tested with formaldehyde (H2CO) and deuterated ammonia (ND3). With H2CO a continuous flux is measured of approximately 10^9/s and a longitudinal temperature of a few K. The data are compared with the result of a Monte Carlo simulation.
ISSN:2331-8422
DOI:10.48550/arxiv.0209041