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- Title
A wide-range multi-channel Air lon Spectrometer.
- Authors
Mirme, Aadu; Tamm, Eduard; Mordas, Genrik; Vana, Marko; Uin, Janek; Mirme, Sander; Bernotas, Toomas; Laakso, Lauri; Hirsikko, Anne; Kulmala, Markku
- Abstract
A new multi-chromel air ion spectrometer (AIS) is presented. The instrument allows simultaneous measurements of positive and negative ion distributions from 3.2 to 0.0013 cm2 V-1 s-1 (0.80-40 nm diameter or, using the Tammet correction, from 0.4 to 40 nm). The mobility range is divided into 27 fractions which are measured simultaneously to ensure a high time resolution (down to 10 seconds). Tile instrument calibration shows a good agreement with the mobility of electrically-classified, mono-dispersed aerosols. The spectrometer overestunates low concentrations of cluster ions. Tiffs is caused by a natttral production of small ions (< 1 nm, 10 to 100 cm-3) inside the spectrometer. The instrument specifications, calibration results and measurements performed show a huge application potential of the new spectrometer.
- Publication
Boreal Environment Research, 2007, Vol 12, Issue 3, p247
- ISSN
1239-6095
- Publication type
Academic Journal