Experimental characterization of the COndensation PArticle counting System for high altitude aircraft-borne application
Experimental characterization of the COndensation PArticle counting System for high altitude aircraft-borne application
复制标题
DOI：
10.5194/amt-2-243-2009
复制
发表时间：
2008-11
影响因子：
3.8
通讯作者：
R. Weigel;M. Hermann;J. Curtius;C. Voigt;S. Walter;T. Böttger;B. Lepukhov;G. Belyaev;S. Borrmann
中科院分区：
文献类型：
--
作者：
R. Weigel;M. Hermann;J. Curtius;C. Voigt;S. Walter;T. Böttger;B. Lepukhov;G. Belyaev;S. Borrmann
Abstract. A characterization of the ultra-fine aerosol particle counter COPAS (COndensation PArticle counting System) for operation on board the Russian high altitude research aircraft M-55 Geophysika is presented. The COPAS instrument consists of an aerosol inlet and two dual-channel continuous flow Condensation Particle Counters (CPCs) operated with the chlorofluorocarbon FC-43. It operates at pressures between 400 and 50 hPa for aerosol detection in the particle diameter (dp) range from 6 nm up to 1 μm. The aerosol inlet, designed for the M-55, is characterized with respect to aspiration, transmission, and transport losses. The experimental characterization of counting efficiencies of three CPCs yields dp50 (50% detection particle diameter) of 6 nm, 11 nm, and 15 nm at temperature differences (ΔT) between saturator and condenser of 17°C, 30°C, and 33°C, respectively. Non-volatile particles are quantified with a fourth CPC, with dp50=11 nm. It includes an aerosol heating line (250°C) to evaporate H2SO4-H2O particles of 11 nm
