Improved setup for producing slow beams of cold molecules using a rotating nozzle

Abstract

Intense beams of cold and slow molecules are produced by supersonic expansion out of a rapidly rotating nozzle, as first demonstrated by Gupta and Herschbach. An improved setup is presented that allows to accelerate or decelerate cold atomic and molecular beams by up to 500 m/s. Technical improvements are discussed and beam parameters are characterized by detailed analysis of time of flight density distributions. The possibility of combining this beam source with electrostatic fields for guiding polar molecules is demonstrated.

References in corpus (4)

• Stopping supersonic oxygen with a series of pulsed electromagnetic coils: A molecular coilgun
• Molecule formation in ultracold atomic gases
• Electrostatic extraction of cold molecules from a cryogenic reservoir
• Collisional effects in the formation of cold guided beams of polar molecules

Cited by in corpus (14)

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• A Bright, Slow Cryogenic Molecular Beam Source for Free Radicals
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• Molecular Collisions: from Near-cold to Ultra-cold
• The excitation function for Li+HF-->LiF+H at collision energies below 80 meV
• Quantum rainbow scattering at tunable velocities
• Cold collisions of polyatomic molecular radicals with S-state atoms in a magnetic field: An ab initio study of He + CH2(X) collisions
• Guiding slow polar molecules with a charged wire
• Pulsed rotating supersonic source used with merged molecular beams
• Penning collisions between supersonically expanded metastable helium atoms and laser-cooled lithium atoms
• Towards density and phase space compression of molecular gases in magneto-electrostatic traps
• Evaporation limited loading of an atom trap
• Rotational properties of two interacting cold polar molecules: linear, symmetric, and asymmetric tops