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Analysis of atmospheric neutral and charged molecular clusters in boreal forest using pulse-height CPC
atmospheric neutral molecular clusters boreal forest pulse-height CPC
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2009/7/1
We measured the size distribution of atmospheric neutral and charged clusters and particles down to mobility diameter around 1.5 nm by applying pulse-height CPC technique at SMEAR II station in Hyyti&...
Ammonia in positively charged pre-nucleation clusters: a quantum-chemical study and atmospheric implications
positively charged pre-nucleation clusters quantum-chemical study atmospheric implications
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2009/6/22
The quantum-chemical treatment of pre-nucleation clusters consisting of atmospheric nucleation precursors is critically important for the understanding of the molecular nature of atmospheric nucleatio...
Chemical characteristics assigned to trajectory clusters during the MINOS campaign
Chemical characteristics trajectory clusters MINOS campaign
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2009/3/10
During the Mediterranean Intensive Oxidant Study (MINOS) in August 2001 a total of 14 measurement flights were performed with the DLR Falcon jet aircraft from Heraklion, Crete. One objective of this c...
Formation of binary ion clusters from polar vapours: effect of the dipole-charge interaction
binary ion clusters polar vapours dipole-charge interaction
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2009/2/23
Formation of binary cluster ions from polar vapours is considered. The effect of vapour polarity on the size and composition of the critical clusters is investigated theoretically and a corrected vers...
From molecular clusters to nanoparticles: second-generation ion-mediated nucleation model
molecular clusters nanoparticles second-generation ion-mediated nucleation model
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2009/1/19
Ions, which are generated in the atmosphere by galactic cosmic rays and other ionization sources, may play an important role in the formation of atmospheric aerosols. In the paper, a new second-genera...
Estimating the NH3:H2SO4 ratio of nucleating clusters in atmospheric conditions using quantum chemical methods
NH3:H2SO4 quantum chemical methods
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2008/12/10
We study the ammonia addition reactions of H2SO4·NH3 molecular clusters containing up to four ammonia and two sulfuric acid molecules using the ab initio method RI-MP2 (Resolution of Identity 2nd orde...
Applicability of condensation particle counters to measure atmospheric clusters
condensation particle counter atmospheric cluster
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2008/11/13
This study presents an evaluation of a pulse height condensation particle counter (PH-CPC) and an expansion condensation particle counter (E-CPC) in terms of measuring ambient and laboratory-generated...