Results 61 to 70 of about 519,734 (204)

Kinetic Modeling of Radiation Belt Electrons With Geant4 to Study Energetic Particle Precipitation in Earth's Atmosphere

open access: yesEarth and Space Science, 2023
We present a new model designed to simulate the process of energetic particle precipitation, a vital coupling mechanism from Earth's magnetosphere to its atmosphere.
G. D. Berland   +4 more
doaj   +1 more source

pyGPI5: A python D- and E-region chemistry and ionization model

open access: yesFrontiers in Astronomy and Space Sciences, 2022
We present a Python implementation of a D- and E-region chemistry and ionization code called pyGPI5. Particle precipitation that penetrates into the E- and D-region of the ionosphere-thermosphere causes significant enhancements of the electron density ...
Stephen R. Kaeppler   +5 more
doaj   +1 more source

Basic principle from electrospray ionization to soft ionization mass spectrometry and development of ion source: part Ⅱ [PDF]

open access: yes, 2023
This paper continue talking about some questions in the experimental phenomenon and basic principle of soft ionization mass spectrometry, describe the forces between the charge and the analyte, ideal model of soft ionization technology, multi-charge and ...
Jiehong, Luo
core   +2 more sources

Calculation of ionization and runaway electrons characteristics in helium with iron vapor

open access: yesPhysical Sciences and Technology, 2021
On the basis of the Monte Carlo method and the many particles dynamics, the ionization and drift characteristics of electrons in a constant field drifting in helium with a certain amount of iron vapor are calculated. The main attention is
R.I. Golyatina   +3 more
doaj   +1 more source

Algorithms for the analysis of MALDI peptide mass fingerprint spectra for proteomics [PDF]

open access: yes, 2005
In this study we present a simple algorithm which allows accurate estimates of the similarity between peptide fingerprint mass spectra from matrix assisted laser desorption/ionization (MALDI) spectrometers.
Monigatti, Flavio
core   +1 more source

Ionization in Reacting Gases [PDF]

open access: yesProceedings of the National Academy of Sciences, 1925
Ionization associated with the oxidation of ethyl alcohol in contact with electrodes.—Previous work had shown that various gaseous reactions are accompanied by ionization. The oxidation of ethyl alcohol was chosen because of its simplicity. Nitrogen carrying 3 cc of alcohol per minute and also dry oxygen at the rate of 200 cc per minute were sent into ...
openaire   +4 more sources

Maximum Ionization in Restricted and Unrestricted Hartree-Fock Theory

open access: yesAtoms, 2021
In this paper, we investigate the maximum number of electrons that can be bound to a system of nuclei modelled by Hartree-Fock theory. We consider both the Restricted and Unrestricted Hartree-Fock models. We are taking a non-existence approach (necessary
Hazel Cox   +2 more
doaj   +1 more source

Double Doping of a Low-Ionization-Energy Polythiophene with a Molybdenum Dithiolene Complex

open access: yes, 2022
Doping of organic semiconductors is crucial for tuning the charge-carrier density of conjugated polymers. The exchange of more than one electron between a monomeric dopant and an organic semiconductor allows the polaron density to be increased relative ...
Seth R. Marder (1285467)   +6 more
core   +1 more source

Ionization-induced Long-lasting Orientation of Symmetric-top Molecules

open access: yes, 2022
We theoretically consider the phenomenon of field-free long-lasting orientation of symmetric-top molecules ionized by two-color laser pulses. The anisotropic ionization produces a significant long-lasting orientation of the surviving neutral molecules ...
Ilia Tutunnikov (11143794)   +3 more
core   +1 more source

Unstable Leader Inception Criteria of Atmospheric Discharges

open access: yesAtmosphere, 2017
In the literature, there are different criteria to represent the formation of a leader channel in short and long gap discharges. Due to the complexity of the physics of the heating phenomena, and the limitations of the computational resources, a ...
Liliana Arevalo, Vernon Cooray
doaj   +1 more source

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