Results 11 to 20 of about 5,298 (198)

Delay in Atomic Photoionization [PDF]

open access: yesPhysical Review Letters, 2010
5 pages, 2 ...
Kheifets, Anatoli, Ivanov, Igor
openaire   +4 more sources

On the photoionization of large molecules [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 1995
There is no apparent limit to the size of a molecule for which photoionization can occur. It is argued that it is difficult to obtain useful photoionization mass spectra of peptides (above ∼ 2000 u), proteins, and oligonucleotides, because of the high internal energy of these polar molecules as a result of the desorption event and because vibrationally
Becker, C.H., Wu, K.J.
openaire   +2 more sources

Photoionization of KCs Molecule: Origin of the Structured Continuum?

open access: yesAtoms, 2020
We report the experimental observation of photoionization bands of the KCs molecule in the deep ultraviolet spectral region between 200 and 420 nm. We discuss the origin of observed photoionization bands as stemming from the absorption from the ground ...
Goran Pichler   +5 more
doaj   +1 more source

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

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

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

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

The study of negative needle-to-plane corona discharge with photoionization under various air pressures

open access: yesAIP Advances, 2021
The characteristics of negative corona discharge in practical applications are strongly dominated by environmental parameters, such as air pressure.
B. X. Lu, L. J. Song
doaj   +1 more source

A Fully Relativistic Approach to Photon Scattering and Photoionization of Alkali Atoms

open access: yesAtoms, 2021
A fully relativistic approach to calculating photoionization and photon-atom scattering cross sections for quasi one-electron atoms is presented. An extensive set of photoionization cross sections have been calculated for alkali atoms: lithium, sodium ...
Adam Singor   +3 more
doaj   +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

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