aqora

A cryogenic buffer gas beam source for cold barium monofluoride molecules

Ralf Albrecht

Jan 1, 20250 citations

A cryogenic buffer gas cooled beam of TlF molecules

Eustace Edwards, Daniel McCarron, Eric B. Norrgard +4 more

Bulletin of the American Physical SocietyJun 8, 20170 citations

Towards Magnetic Trapping of Polar Molecules from a Slow Buffer Gas Beam

Hsin-I Lu, Ivan Kozyryev, Boerge Hemmerling +2 more

Bulletin of the American Physical SocietyJun 6, 20130 citations

Construction and Operation of a Cryogenic Source for Cold Polar Molecules

Christian Sommer

This thesis reports on the combination of buffer-gas cooling with electric velocity filtering to produce a high-density guided beam of slow and internally cold polar molecules. In the continuous source, warm molecules are first cooled by collisions with a cryogenic helium buffer gas. Cold molecules are then extracted by means of an electric quadrupole guide. For formaldehyde the population of individual rotational states in the guide is monitored by depletion spectroscopy, resulting in single-state populations up to 82 %. This thesis also reports on a technique to produce pulses of slow guided molecules. The pulses exhibit a narrow velocity distribution around a tunable velocity.This thesis reports on the combination of buffer-gas cooling with electric velocity filtering to produce a high-density guided beam of slow and internally cold polar molecules. In the continuous source, warm molecules are first cooled by collisions with a cryogenic helium buffer gas. Cold molecules are then extracted by means of an electric quadrupole guide. For formaldehyde the population of individual rotational states in the guide is monitored by depletion spectroscopy, resulting in single-state populations up to 82 %. This thesis also reports on a technique to produce pulses of slow guided molecules. The pulses exhibit a narrow velocity distribution around a tunable velocity.

Jan 1, 20110 citations

Cryogenic beam sources: towards trapping and cooling polar molecules

David R. Glenn, E. S. Shuman, John F. Barry +1 more

Bulletin of the American Physical SocietyMay 21, 20090 citations

Continuous guided beams of slow and internally cold polar molecules

Christian Sommer, Laurens D. van Buuren, M. Motsch +4 more

We describe the combination of buffer-gas cooling with electrostatic velocity filtering to produce a high-flux continuous guided beam of internally cold and slow polar molecules. In a previous paper (L.D. van Buuren et al., Phys. Rev. Lett., 2009, 102, 033001) we presented results on density and state purity for guided beams of ammonia and formaldehyde using an optimized set-up. Here we describe in more detail the technical aspects of the cryogenic source, its operation, and the optimization experiments that we performed to obtain the best performance. The versatility of the source is demonstrated by the production of guided beams of different molecular species.We describe the combination of buffer-gas cooling with electrostatic velocity filtering to produce a high-flux continuous guided beam of internally cold and slow polar molecules. In a previous paper (L.D. van Buuren et al., Phys. Rev. Lett., 2009, 102, 033001) we presented results on density and state purity for guided beams of ammonia and formaldehyde using an optimized set-up. Here we describe in more detail the technical aspects of the cryogenic source, its operation, and the optimization experiments that we performed to obtain the best performance. The versatility of the source is demonstrated by the production of guided beams of different molecular species.

arXiv:0812.1923Faraday DiscussionsJan 1, 200944 citations

Electrically guided continuous supersonic beams of polar molecules from a cryogenic buffer-gas source

Related papers

Electrically guided continuous supersonic beams of polar molecules from a cryogenic buffer-gas source

Related papers