Concept
Chemical ionization
Related publications (190)
CEERS Key Paper. VIII. Emission-line Ratios from NIRSpec and NIRCam Wide-Field Slitless Spectroscopy at z > 2
We use James Webb Space Telescope Near-Infrared Camera Wide Field Slitless Spectroscopy (NIRCam WFSS) and the Near-Infrared spectrograph (NIRSpec) in the Cosmic Evolution Early Release survey to measure rest-frame optical emission-line ratios of 155 galaxi ...
Bristol2024Positive Streamer Initiation in SF6/CO2 Based on Zener's Field Ionization
In this study, experiments were performed to measure the inception and breakdown voltages of SF6/CO2 mixed gases with varying mixing ratios at two different pressures (1 and 2 bar). Using the preliminary data obtained from the experiments, a 3D particle mo ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023Bulk size-resolved chemical composition and mass concentration of non-refractory submicron aerosols measured in the Swiss container during MOSAiC 2019/2020
Julia Schmale, Ivo Fabio Beck, Benjamin Jérémy Laurent Heutte, Imad El Haddad, Hélène Paule Angot, Lubna Dada
This dataset contains the bulk size-resolved chemical composition and mass concentration of non-refractory submicron aerosols (NR-PM1) measured during the MOSAiC expedition from October 2019 to July 2020. These include the mass concentrations of sulfate (S ...
EPFL Infoscience2023Characterization of transversely confined electron beam-generated plasma using two-dimensional particle-in-cell simulations
Electron beam-generated plasmas (EBPs) have been used to modify the surface properties. In certain applications, EBPs are transversely confined and their properties are of value to the treatment. In this paper, the characteristics of an electron beam-gener ...
2023Numerical and experimental investigations of a microwave interferometer for the negative ion source SPIDER
Ivo Furno, Rémy Jacquier, Riccardo Agnello
The electron density close to the extraction grids and the co-extracted electrons represent a crucial issue when operating negative ion sources for fusion reactors. An excessive electron density in the plasma expansion region can indeed inhibit the negativ ...
IOP Publishing Ltd2023Quantifying the Solution Structure of Metal Nanoclusters Using Small-Angle Neutron Scattering
Francesco Stellacci, Stefan Guldin, Ye Yang, Zhi Luo, Huayan Yang
Metal nanoclusters are a unique class of synthetic material, as their crystal structures can be resolved using X-ray diffraction, and their chemical formula can be precisely determinated from mass spectroscopy. However, a complete structure characterizatio ...
WILEY-V C H VERLAG GMBH2022Standard-Free Quantification of Dicarboxylic Acids: Case Studies with Salt-Rich Effluents and Serum
Christian Ludwig, Daniil Salionov, Sasa Bjelic
The present study evaluates the ionization efficiency (IE) of linear and branched C2–C14 dicarboxylic acids (DCAs) by electrospray ionization (ESI) under different conditions. The influence of the concentration of organic modifier (MeOH); mobile phase addi ...
2022Ionization Difference between Weak and Strong Electrolytes as Perturbed by Conductivity Spectra Analysis
While the static structure of aqueous electrolytes has been studied for decades, their dynamic microscopic structure remains unresolved yet critical in many areas. We report a comparative study of dc and ac (1 Hz to 20 GHz) conductivity data of weak and st ...
AMER CHEMICAL SOC2022Fragment ion-functional group relationships in organic aerosols using aerosol mass spectrometry and mid-infrared spectroscopy
Satoshi Takahama, Imad El Haddad, Nikunj Dudani, Amir Yazdani
Aerosol mass spectrometry (AMS) and mid-infrared spectroscopy (MIR) are two analytical methods for characterizing the chemical composition of OM. While AMS provides high-temporal-resolution bulk measurements, the extensive fragmentation during the electron ...
European Geosciences Union2022Identification of Isomeric Biomolecules by Infrared Spectroscopy of Solvent-Tagged Ions
The difference in functionality of many isomeric biomolecules requires their analytical identification for life science studies. We present a universal approach for quantitative identification of different small- to medium-sized isomeric biomolecules that ...
AMER CHEMICAL SOC2022