Results 21 to 30 of about 26,112 (242)

Photoionization and Electron–Ion Recombination in Astrophysical Plasmas

open access: yesAtoms, 2023
Photoionization and its inverse, electron–ion recombination, are key processes that influence many astrophysical plasmas (and gasses), and the diagnostics that we use to analyze the plasmas. In this review we provide a brief overview of the importance of
D. John Hillier
doaj   +1 more source

Photoionization and heating of a supernova-driven turbulent interstellar medium [PDF]

open access: yes, 2014
JB acknowledges the support of an STFC studentship.The diffuse ionized gas (DIG) in galaxies traces photoionization feedback from massive stars.
Wood, Kenneth   +3 more
core   +1 more source

The role of photoionization in negative corona discharge

open access: yesAIP Advances, 2016
The effect of photoionization on the negative corona discharge was simulated based on the needle to plane air gaps. The Trichel pulse, pulse train, electron density and the distribution of electric field will be discussed in this manuscript.
B. X. Lu, H. Y. Sun
doaj   +1 more source

Double photoionization of He isoelectronic sequence / [PDF]

open access: yes, 2019
Double photoionization of He-like ions is investigated using a few-step approach, that treats direct double photoionization as a sequence of two- (photoionization-ionization) and three-step (photoionization-excitation-ionization ...
Koncevičiūtė, Jurgita,   +1 more
core   +1 more source

State-to-state dissociative photoionization of molecular nitrogen: the full story

open access: yesAdvances in Physics: X, 2020
N2 is a major constituent of Earth and planetary atmospheres. First, evidenced in 1952, the dissociative photoionization of molecular nitrogen, N2, plays an important role in the species abundance, out of equilibrium evolution, and chemical reactivity of
T. Ayari   +8 more
doaj   +1 more source

Measurement of Photoionization Cross-Section for the Excited States of Atoms: A Review

open access: yesAtoms, 2022
A review of experimental studies of the measurement of the photoionization cross-section for the excited states of the alkali atoms, alkaline earth atoms, and rare-gas atoms is presented, with emphasis on using multi-step laser excitation, ionization ...
Muhammad Aslam Baig
doaj   +1 more source

An Iterative Ab Initio Non-Hermitian Floquet Method for Photoionization Resonances [PDF]

open access: yes, 2020
We present an efficient ab initio non-Hermitian Floquet method for computing the photoionization resonances of an electronic system interacting with linearly polarizedmonochromatic laser light.
sajeev, Y
core   +1 more source

Ultrafast Laser Processing of Diamond Materials: A Review

open access: yesFrontiers in Physics, 2021
Diamond laser engineering is of great importance for designing devices, which find applications in radiation sensing and quantum technologies. A review of the present state of the art of experimental and theoretical studies on ultrashort laser ...
Tzveta Apostolova   +4 more
doaj   +1 more source

Theoretical Investigations of Photoionization Efficiency of Naphthalene [PDF]

open access: yes, 2019
The equilibrium geometry and 48 vibrational normal-mode frequencies of the neutral and cationic ground state and the cationic first excited states of naphthalene isomers were calculated and characterized in the adiabatic representation by using the ...
Chih-Hao Chin (6050215)   +5 more
core   +1 more source

Photoionization of Atomic Systems Using the Random-Phase Approximation Including Relativistic Interactions

open access: yesAtoms, 2022
Approximation methods are unavoidable in solving a many-electron problem. One of the most successful approximations is the random-phase approximation (RPA). Miron Amusia showed that it can be used successfully to describe atomic photoionization processes
Pranawa C. Deshmukh, Steven T. Manson
doaj   +1 more source

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