Results 41 to 50 of about 134,760 (296)

Impact of middle range energy electron precipitations on polar winter ozone losses [PDF]

E3S Web of Conferences, 2019
In this paper we present the study of polar winter atmospheric response to middle range energy electron precipitations. We analse the variability of the odd nitrogen group NOx, hydrogen group HOx in the polar wonter atmosphere and estimate the ozone (O3)
Golubenko Kseniia, Mironova Irina, Rozanov Eugene   +2 more
doaj   +1 more source

Nontargeted Screening Using Gas Chromatography–Atmospheric Pressure Ionization Mass Spectrometry: Recent Trends and Emerging Potential

Molecules, 2021
Gas chromatography–high-resolution mass spectrometry (GC–HRMS) is a powerful nontargeted screening technique that promises to accelerate the identification of environmental pollutants.
Xiaolei Li, Frank L. Dorman, Paul A. Helm, Sonya Kleywegt, André Simpson, Myrna J. Simpson, Karl J. Jobst   +6 more
doaj   +1 more source

Ionization by bulk heating of electrons in capacitive radio frequency atmospheric pressure microplasmas

, 2013
Electron heating and ionization dynamics in capacitively coupled radio frequency (RF) atmospheric pressure microplasmas operated in helium are investigated by Particle in Cell simulations and semi-analytical modeling.
, A Derzsi, Babayan S E, Becker K H, D Eremin, Hemke T, J Meichsner, J Schulze, K Dittmann, Knake N, Kong M G, Kurihara M, Niemi K, Niermann B, Phelps A V, Pipa A V, Proshina O V, Reuter S, Reuter S, Schaper L, Schulze J, Schulze J, Schulze J, Schulze J, Schulze J, T Hemke, T Mussenbrock, Turner M M, Waskoenig J, Weltmann K D, Z Donkó   +30 more
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The Possible Role of Penning Ionization Processes in Planetary Atmospheres

Atmosphere, 2015
In this paper we suggest Penning ionization as an important route of formation for ionic species in upper planetary atmospheres. Our goal is to provide relevant tools to researchers working on kinetic models of atmospheric interest, in order to include ...
Stefano Falcinelli, Fernando Pirani, Franco Vecchiocattivi   +2 more
doaj   +1 more source

Multi-scheme chemical ionization inlet (MION) for fast switching of reagent ion chemistry in atmospheric pressure chemical ionization mass spectrometry (CIMS) applications [PDF]

Atmospheric Measurement Techniques, 2019
A novel chemical ionization inlet named the Multi-scheme chemical IONization inlet (MION), Karsa Ltd., Helsinki, Finland) capable of fast switching between multiple reagent ion schemes is presented, and its performance is demonstrated by measuring ...
M. P. Rissanen, M. P. Rissanen, J. Mikkilä, S. Iyer, S. Iyer, J. Hakala   +5 more
doaj   +1 more source

Theory of Fluid Instabilities in Partially Ionized Plasmas: An Overview

Frontiers in Astronomy and Space Sciences, 2022
Partially ionized plasmas (PIP) are essential constituents of many astrophysical environments, including the solar atmosphere, the interstellar medium, molecular clouds, accretion disks, planet ionospheres, cometary tails, etc., where the ionization ...
Roberto Soler, Roberto Soler, José Luis Ballester, José Luis Ballester   +3 more
doaj   +1 more source

Possible effect of extreme solar energetic particle events of September–October 1989 on polar stratospheric aerosols: a case study [PDF]

Atmospheric Chemistry and Physics, 2013
The main ionization source of the middle and low Earth's atmosphere is related to energetic particles coming from outer space. Usually it is ionization from cosmic rays that is always present in the atmosphere.
I. A. Mironova, I. G. Usoskin
doaj   +1 more source

Partially ionized atmospheres of neutron stars with strong magnetic fields

, 2005
We construct hydrogen atmosphere models for strongly magnetized neutron stars in thermodynamic equilibrium, taking into account partial ionization. The presence of bound states affects the equation of state, absorption coefficients, and polarizability ...
A.Y. Potekhin, Bezchastnov, Bulik, Dong Lai, G. Chabrier, Ho, Ho, Ho, Ho, Lai, Lai, Lai, Miller, Pavlov, Potekhin, Potekhin, Potekhin, Potekhin, Potekhin, Potekhin, Rajagopal, Shibanov, W.C.G. Ho, Zane, Zane   +24 more
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atmospheric pressure ionization [PDF]

, 2014
Citation: 'atmospheric pressure ionization' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.A00492 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms ...
openaire   +1 more source

Ionization in Nova Atmospheres [PDF]

International Astronomical Union Colloquium, 1970
AbstractCalculations on the expansion of novae shells are presented, from which the degree of ionization is obtained using a simplified form of a non-LTE ionization equation. From this, estimates of the time of vanishing of the Balmer absorption spectrum can be made.
openaire   +1 more source