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Efficiencies for production of nitrogen oxides by proton impact in air
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Åskforskning)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Åskforskning)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy. Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory. (Jonfysik)
2013 (English)In: Journal of Atmospheric and Solar-Terrestrial Physics, ISSN 1364-6826, E-ISSN 1879-1824, Vol. 94, 1-4 p.Article in journal (Refereed) Published
Abstract [en]

We present present the first laboratory measurements of nitrogen oxides generated by proton impact in air. Experiments were conducted at the Tandem Laboratory of Uppsala University. A proton beam with known current and energy was injected into an air tight ionising chamber for a fixed time duration and the resulting nitrogen oxides were measured by the method of chemiluminescence. The data are presented in terms of number of produced NOX (NO+NO2) molecules for different proton energy, proton beam current and duration. The efficiency for NOX production by proton impact in air can on average be estimated to about 0.2 NOX molecules per ion-pair based on 1 cm diameter proton beam with energies from 2 to 4 MeV and varied currents from 0.1 to 10 nA. 

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 94, 1-4 p.
Keyword [en]
Nitrogen oxides, Cosmic rays, Ion-pair, Proton beam
National Category
Natural Sciences Engineering and Technology Meteorology and Atmospheric Sciences
Research subject
Engineering Science with specialization in Atmospheric Discharges
Identifiers
URN: urn:nbn:se:uu:diva-197638DOI: 10.1016/j.jastp.2012.12.021ISI: 000315366100001OAI: oai:DiVA.org:uu-197638DiVA: diva2:613994
Available from: 2013-04-03 Created: 2013-04-02 Last updated: 2017-12-06

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Rahman, MahbuburCooray, VernonPossnert, Göran

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