# Cooling and Collisions of Large Gas Phase Molecules

 Title: Cooling and Collisions of Large Gas Phase Molecules Author: Patterson, David; Tsikata, Edem; Doyle, John M. Note: Order does not necessarily reflect citation order of authors. Citation: Patterson, David, Edem Tsikata, and John M. Doyle. 2010. Cooling and collisions of large gas phase molecules. Physical Chemistry Chemical Physics 12(33): 9736-9741. Full Text & Related Files: Napthalene_pccp.pdf (1.400Mb; PDF) Abstract: Cold and dense samples of naphthalene $$(C_{10}H_8)$$ are produced using buffer gas cooling in combination with rapid, high flow molecule injection. The observed naphthalene density is $$n \approx 10^{11} cm_{−3}$$ over a volume of a few $$cm^3$$ at a temperature of 6 K. We observe naphthalene–naphthalene collisions through two-body loss of naphthalene with a loss cross section of $$\sigma_{\Lambda-\Lambda} = 1.4 × 10^{-14} cm^2$$. Analysis is presented that indicates that this combination of techniques will be applicable to many comparably sized molecules. This technique can also be combined with cryogenic beam methods to produce cold, high flux, continuous molecular beams. Published Version: doi:10.1039/c002764b Other Sources: http://www.doylegroup.harvard.edu/wiki/images/b/b5/Napthalene_pccp.pdf Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:8866867 Downloads of this work: