Velocity distribution of the pulsed ND3 molecular beam selected by a quadrupole Stark velocity filter

Autor:	Takao Sekiguchi, Yasumasa Okuda, Hidenobu Tsuji, Hideto Kanamori
Rok vydání:	2007
Předmět:	business.industry Chemistry Nozzle Buffer gas General Physics and Astronomy Filter (signal processing) Thermal velocity Quadrupole Molecule Physics::Atomic Physics Physical and Theoretical Chemistry Atomic physics business Molecular beam Thermal energy
Zdroj:	Chemical Physics Letters. 436:331-334
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2007.01.064
Popis:	We selected the slow velocity components from the ND 3 molecules with Maxwell–Boltzmann distribution at room temperature by using a pulsed nozzle and a quadrupole Stark guide. The velocity distribution after the filtering system shows good agreement with theory based on the Stark energy shift in molecular rotational states. We can detect the component of 60 m/s as the slowest column, which corresponds to 4 K of the thermal energy. This result promises that molecules in the mK region would be obtainable by combining this technique with a pre-cooling process like He buffer gas cooling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6d300481fec66520f11b4d0ec1ee86d https://doi.org/10.1016/j.cplett.2007.01.064 Zobrazit plný text záznamu Full Text from ScienceDirect