Electrostatic extraction of cold molecules from a cryogenic reservoir
| Autor: | van Buuren, L. D., Sommer, C., Motsch, M., Pohle, S., Schenk, M., Bayerl, J., Pinkse, P. W. H., Rempe, G. |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 102, 033001 (2009) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.102.033001 |
| Popis: | 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 $(7 \pm ^{7}_{4}) \times 10^{10}$ molecules/s with peak densities up to $(1.0 \pm ^{1.0}_{0.6}) \times 10^9$ molecules/cm$^3$. For H$_2$CO the population of rovibrational states is monitored by depletion spectroscopy, resulting in single-state populations up to $(82 \pm 10)%$. Comment: 4 pages, 4 figures, changes to the text, updated figures and references |
| Databáze: | arXiv |
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