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Charging of aerosol and nucleation in atmospheric pressure

Charging of aerosol and nucleation in atmospheric pressure electrical discharges J P Borra Laboratoire de Physique des Gaz et Plasmas, CNRS-Univ. Paris-Sud, F-91405, SUPELEC, 3 Rue Joliot Curie, Gif-sur-Yvette, F-91192, France E-mail: [email protected] Received 3 June 2008, in final form 29 July 2008 Published 5 November 2008

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Charging of aerosol and nucleation in atmospheric

In such defined charging conditions, field and diffusion charging laws are depicted, with respect to applications of controlled kinematics of charged aerosol. Then key parameters controlling the formation by nucleation and the growth by coagulation of particles in plasmas are presented.

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Charging state of the atmospheric nucleation mode:

[1] One way of getting information about the relative roles of neutral and ion‐induced nucleation in the atmosphere is to measure the charging state of aerosol particles, i.e., the extent by which the charged fraction of aerosol particles differs from the corresponding equilibrium charged fraction.

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Direct Observations of Atmospheric Aerosol Nucleation

2013-07-04  Abstract. Atmospheric nucleation is the dominant source of aerosol particles in the global atmosphere and an important player in aerosol climatic effects. The key steps of this process occur in the sub–2-nanometer (nm) size range, in which direct size-segregated observations have not been possible until very recently.

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On the charging state of atmospheric aerosols and ion-induced

2011-05-23  of particles formed through ion-induced nucleation (IIN). The charging state is a quantity directly related to the charged fraction, but which conveys more physical meaning in a dy-namical aerosol particle population. The charging state is defined as the ratio of the ambient

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Charging of aerosol and nucleation in atmospheric pressure electrical discharges J P Borra-Nano-particle size-dependent charging and electro-deposition in dielectric barrier discharges N Jidenko, C Jimenez, F Massines et al.-Topical Review K Wegner, P Piseri, H Vahedi Tafreshi et al.-Recent citations Low temperature plasmas and electrosprays

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Measurement of the nucleation of atmospheric aerosol

The formation of new atmospheric aerosol particles and their subsequent growth have been observed frequently at various locations all over the world. The atmospheric nucleation rate (or formation rate) and growth rate (GR) are key parameters to characterize the phenomenon. Recent progress in measurement techniques enables us to ...

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Atmospheric pressure plasmas for aerosols processes in materials

2019-11-03  Version finale post-referee transmise à Europ.Phys. Journal, Applied Phys. le 26 janvier 09 ATMOSPHERIC PRESSURE PLASMAS FOR AEROSOLS PROCESSES IN MATERIALS AND ENVIRONMENT Borra JP, Jidenko N, Bourgeois E Laboratoire de Physique des Gaz et Plasmas CNRS-Univ. Paris-Sud, Orsay, F-91405

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Enhancement of contact nucleation by scavenging of charged

2009-01-21  Enhancement of contact nucleation by scavenging of charged aerosol particles Sachchida N. Tripathi*, R. Giles Harrison Department of Meteorology, University of Reading, P.O. Box 243, Earley Gate, Reading RG6 6BB, UK Received 2 October 2001; received in revised form 1 February 2002; accepted 1 February 2002

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On the charging state of atmospheric aerosols and ion

In this thesis, ion-induced nucleation is investigated through long-term measurements in two different environments: in the background site of Hyytiälä and in the urban site that is Helsinki. The main conclusion of this thesis is that ion-induced nucleation generally plays a

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On the charging state of atmospheric aerosols and ion

In this thesis, ion-induced nucleation is investigated through long-term measurements in two different environments: in the background site of Hyytiälä and in the urban site that is Helsinki. The main conclusion of this thesis is that ion-induced nucleation generally plays a

More

Charging state of the atmospheric nucleation mode:

Abstract One way of getting information about the relative roles of neutral and ion-induced nucleation in the atmosphere is to measure the charging state of aerosol particles, i.e., the extent by which the charged fraction of aerosol particles differs from the corresponding equilibrium charged fraction.

More

Charging state of the atmospheric nucleation mode:

Abstract [1] One way of getting information about the relative roles of neutral and ion-induced nucleation in the atmosphere is to measure the charging state of aerosol particles, i.e., the extent by which the charged fraction of aerosol particles differs from the corresponding equilibrium charged fraction.

More

Charging state of atmospheric nanoparticles during the

The aim of this study is to determine experimentally the charging probabilities for atmospheric aerosol particles as a function of particle size in the nucleation mode size range, to elucidate the formation mechanisms of atmospheric aerosols from the measurements of aerosol size distribution and air ion mobility distribution and to estimate the ...

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Effects of Image Charges on the Scavenging of Aerosol

2017-02-28  Effects of Image Charges on the Scavenging of Aerosol Particles by Cloud Droplets and on Droplet Charging and Possible Ice Nucleation Processes ... The equations relevant to charging and discharging aerosol particles by air ions are given in Pruppacher and Klett (1997) in

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Measurement of the charging state of 4–70 nm aerosols

If the charging state of an aerosol size distribution differs from the equilibrium distribution it can indicate that ions are participating actively in the formation and/or growth of the aerosols (Laakso et al., 2007), however under certain conditions any effect from charging of freshly nucleated aerosols may be lost before the aerosols reach detectable sizes (Kerminen et al., 2007).

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Charging state of atmospheric nanoparticles during

Vana et al. (2006) used simultaneous measurements of aerosol size distribution and air ion mobility distribution to ascertain the charging state of atmospheric nanoparticles in the size range 2.6-40 nm during particle nucleation events.

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Impact of a hydrophobic ion on the early stage of

2019-10-17  Gas-to-particle conversion, also known as atmospheric aerosol nucleation, is responsible for about half of the global cloud condensation nuclei. It has been further argued that homogenous ternary nucleation including water is the major pathway for atmospheric aerosol formation. In contrast to earlier results on pure protonated water ...

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Measurement of the charging state of 4-70 nm aerosols

2017-08-29  conditions any effect from charging of freshly nucleated aerosols may be lost before the aerosols reach detectable sizes (Kerminen et al., 2007). Previously measurements of the charging state of aerosols have been used to characterize 35 growth rates and the contributions from ions to aerosol formation in atmospheric

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The Aerosol Nucleation Puzzle Science

2013-02-22  From gases into particles. (A) Atmospheric nucleation is represented for sulfuric acid (sulfur atoms in yellow) and organic molecules (carbon atoms in green) joining to form a critical cluster, which grows to become an aerosol particle . (B) The boreal forest at Hyytiälä, Finland, where Kulmala et al. performed detailed field ...

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Measurement of the charging state of 4-70 nm aerosols

2017-08-29  conditions any effect from charging of freshly nucleated aerosols may be lost before the aerosols reach detectable sizes (Kerminen et al., 2007). Previously measurements of the charging state of aerosols have been used to characterize 35 growth rates and the contributions from ions to aerosol formation in atmospheric

More

The Aerosol Nucleation Puzzle Science

2013-02-22  From gases into particles. (A) Atmospheric nucleation is represented for sulfuric acid (sulfur atoms in yellow) and organic molecules (carbon atoms in green) joining to form a critical cluster, which grows to become an aerosol particle . (B) The boreal forest at Hyytiälä, Finland, where Kulmala et al. performed detailed field ...

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Molecular understanding of atmospheric particle

2013-10-22  Molecular understanding of atmospheric particle formation from sulfuric acid and large oxidized ... McGraw R. Hydrogen-bonding interaction in molecular complexes and clusters of aerosol nucleation precursors. J Phys Chem A. 2009; 113 (4 ... Kulmala M. Charging of aerosol particles in the near free-molecule regime ...

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Recent insights into the formation and chemical composition of atmospheric

2019-09-28  atmospheric pressure that emits a particles that ionize the buffer gas mixture to form H 3O+, O 2-and CO 3-as the primary stable ions. These ions react with the compounds evaporated from the aerosol to ionize them, and electrostatic lenses direct these ions into the collision cell where the ions are de-clustered from neutral compounds that may

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Sulphuric acid closure and contribution to nucleation mode

2016-01-11  tion of Aerosol Nucleation in the European Boundary layer) during an intensive field campaign, which was conducted in Hyyti¨al ¨a, Finland in March–April 2003. In this paper, the closure between measured and calculated H2SO4 con-centrations is investigated. Besides that, also the contribu-tion of sulphuric acid to nucleation mode particle ...

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and Physics Chemistry Ice nucleation by surrogates for atmospheric

2016-01-11  Ice nucleation by surrogates for atmospheric mineral dust and ... Asian dust aerosol particles was also studied. Measurements ... culations of DMA multiple charging (Weidensohler, 1988) were used to estimate the contributions of larger aerosols to the size-selected particles.

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Using measurements of the aerosol charging state in

2018-01-23  J. Leppa et al.: Using measurements of the aerosol charging state 465¨ with oppositely-charged particles, are allowed to have differ-ent values. Let us consider a system that consists of two aerosol par-ticle modes: a narrow nucleation mode and a mode of larger

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Atmospheric nucleation and growth in the CLOUD experiment

2016-04-21  Atmospheric Nucleation and Growth in the CLOUD Experiment at CERN Jasper Kirkbya and the CLOUD collaborationb aCERN, CH-1211 Geneva, Switzerland b Aerodyne Research Inc., Billerica, Massachusetts 01821, USA California Institute of Technology, Division of Chemistry and Chemical Engineering, Pasadena,

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AIR IONS AND CHARGING STATE OF ATMOSPHERIC NANOPARTICLES AT

2012-12-05  AIR IONS AND CHARGING STATE OF ATMOSPHERIC NANOPARTICLES AT THE MACE HEAD RESEARCH STATION M. VANA1,2, H.E. MANNINEN 1, ... and to estimate the charging state of nucleation mode particles and the role of ... (European Integrated project on Aerosol Cloud Climate and Air Quality interactions), we

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19th International Conference on Nucleation Atmospheric Aerosols

2013-06-20  19th International Conference on Nucleation Atmospheric Aerosols and Nucleation Symposium 24-28 June 2013 Fort Collins, Colorado, USA F

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and Physics Chemistry Atmospheric Kinetic nucleation and ions

2018-01-23  Kinetic nucleation and ions in boreal forest particle formation events L. Laakso1, T. Anttila1,3, K. E.J. Lehtinen1, ... charging of aerosol particles in the corona charger and the subsequent removal of charged particles by electrostatic fil-tration is

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Studies pertaining to aerosol formation: Nucleation

In recent years there has been a rekindling of interest in the field of aerosol science, with emphasis on studies of the properties of small particles and in the mechanisms by which they are formed and subsequently grow. This has been brought on partly by the advent of new experimental techniques which enable an investigation of the ...

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Unipolar Diffusion Charging of Aerosol Particles at Low Pressure

2018-06-05  Unipolar Diffusion Charging of Aerosol Particles at Low Pressure Francisco J. Romay and David Y. H. ~ui* Mechanical Engineering Department, University of Minnesota, Minneapolis, MN 55455 Motoaki Adachi Research Institute for Advanced

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recharge your aerosol spray can - YouTube

2010-10-10  This video was uploaded from an Android phone.

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A parameterization of ion-induced nucleation of sulphuric acid

2009-01-21  A parameterization of ion-induced nucleation of sulphuric acid and water for atmospheric conditions M. S. Modgil Department of Physics, Indian Institute of Technology, Kanpur, India Sanjeev Kumar and S. N. Tripathi Department of Civil Engineering, Indian Institute of

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NASA Astrobiology Institute

We have reexamined the theory of aerosol particle charging, and identified a number of assumptions and computational limitations of the earlier theory that strongly affect the ultimate charge distribution, particularly for large particles, which will impact estimations of the electric field and charge distribution in the Titan atmosphere.

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Molecular understanding of sulphuric acid–amine particle

2013-10-06  Nucleation of aerosol particles from trace atmospheric vapours is thought to provide up to half of global cloud condensation nuclei 1. Aerosols can cause a net cooling of climate by scattering sunlight and by leading to smaller but more numerous cloud droplets, which makes clouds brighter and extends their lifetimes 2.

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Numerical Modeling of an RF Argon–Silane Plasma with Dust Particle Nucleation

2016-05-31  Numerical Modeling of an RF Argon–Silane Plasma with Dust Particle Nucleation and Growth ... sectional aerosol model, ... aerosol sectional model was used to model particle nucleation, surface growth and charging, self-consistently coupled to a plasma fluid model.

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Bipolar Charging of Ultrafine Aerosol Particles

2018-06-29  Bipolar Charging of Ultrafine Particles FIGURE 4. Equilibrium charging characteristics. bipolar charged ferences were seen between these three re- of 100-pCi activity (Figure 2) can attain the sults. The two results with different activity stationary charge state for the aerosol in 1

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Experimental study of H2SO4 aerosol nucleation at high

aerosol nucleation rate at high ionization levels were per-formed in an 8m3 reaction chamber. Neutral and ion-induced particle formation from sulfuric acid (H2SO4) was studied as a function of ionization and H2SO4 concentration. Other species that could have participated in the nucleation, such as NH3 or organic compounds, were not measured but as-

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