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Aerosol charge state characterisation using an ELPI

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publicationPROCEEDINGS OF THE 13TH INTERNATIONAL CONFERENCE ON ELECTROSTATICS: ELECTROSTATICS 2011
EditorsDM Taylor
Place of PublicationBRISTOL
Publisher or commissioning bodyDeutsche Physikalische Gesellschaft & IOP Publishing Ltd
Number of pages4
ISBN (Print)*****************
DOIs
DatePublished - 2011
Event13th International Conference on Electrostatics - Bangor
Duration: 10 Apr 201114 Apr 2011

Publication series

NameJournal of Physics Conference Series
PublisherIOP PUBLISHING LTD
Volume301
ISSN (Print)1742-6588

Conference

Conference13th International Conference on Electrostatics
CityBangor
Period10/04/1114/04/11

Abstract

A new technique has been developed to measure the size distribution and charge state of highly charged aerosols using an Electrical Low Pressure Impactor (ELPI). The internal charger was switched alternately on and off and the time between stable charge states found to be similar to 10 s. The size distribution of aerosols was found when the charger was on, from which the charge distribution can be estimated when the charger is off using the current at each impactor stage. This method was tested in background conditions, when a candle was burning and when a negative air ioniser was used. The ELPI electrometers were not sensitive enough to accurately measure the charge state on background and candle air, but gave a value for air charged by an ioniser. Comparing results from the ELPI with other techniques showed inaccuracies in this method that need to be addressed before further use of this technique.

    Research areas

  • SMALL-ION

Event

13th International Conference on Electrostatics

Duration10 Apr 201114 Apr 2011
CityBangor

Event: Conference

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