Electrostatic extraction of cold molecules from a cryogenic reservoir

Abstract

We present a method which delivers a continuous, high-density beam of slow and internally cold polar molecules. In our source, warm molecules are first cooled by collisions with a cryogenic helium buffer gas. Cold molecules are then extracted by means of an electrostatic quadrupole guide. For ND${}_3$ the source produces fluxes up to $(7{\pm }_4^7)\times 10^{10}$ molecules/s with peak densities up to $(1.0{\pm }_{0.6}^{1.0})\times 10^9$ molecules/cm${}^3$. For H${}_2$CO the population of rovibrational states is monitored by depletion spectroscopy, resulting in single-state populations up to $(82\pm 10)$.

4 pages, 4 figures, changes to the text, updated figures and references

References in corpus (13)

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Cited by in corpus (42)

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• Efficient method for quantum calculations of molecule - molecule scattering properties in a magnetic field
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• Velocity-selected molecular pulses produced by an electric guide
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• Buffer-gas cooling of molecules in the low-density regime: Comparison between simulation and experiment
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• Thermometry of Guided Molecular Beams from a Cryogenic Buffer-Gas Cell
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• Production of carbon clusters ${\text{C}}_3$ to ${\text{C}}_{12}$ with a cryogenic buffer-gas beam source
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• Cold collisions of polyatomic molecular radicals with S-state atoms in a magnetic field: An ab initio study of He + CH2(X) collisions
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• Fast and High-Yield Loading of a D${}_2$ MOT of Potassium from a Cryogenic Buffer Gas Beam
• Deceleration of molecules in a supersonic beam by the optical field in a low-finesse cavity
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• A novel method to determine the phase-space distribution of a pulsed molecular beam
• Electrostatic guiding of the methylidyne radical at cryogenic temperatures
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