Results 161 to 170 of about 5,389 (204)
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Photoionization of N2O: Mechanisms of photoionization and ion dissociation

Journal of Chemical Physics, 1977
From high resolution photoionization mass spectrometric data on normal and isotopically substituted N2O it is concluded that the formation of NO+ below the à state of N2O+ but above the thermochemical threshold involves the calculated but hitherto unobserved 4A″ state.
Eland J H D, Berkowitz J
exaly   +2 more sources

Electronic Spectroscopy and Photoionization of LiBe

The Journal of Physical Chemistry A, 2021
Dimers consisting of an alkali metal bound to an alkaline earth metal are of interest from the perspectives of their bonding characteristics and their potential for being laser cooled to ultracold temperatures. There have been experimental and theoretical studies of many of these species, but spectroscopic data for LiMg and the LiMg+ cation are sparse.
Thomas D. Persinger   +2 more
openaire   +3 more sources

Photoionization of the beryllium atom

Physical Review A, 1995
Photoionization cross sections of the Be atom are calculated using the hyperspherical close-coupling method where a model potential is employed to approximate the screening of the 1[ital s][sup 2] closed-shell core electrons. The cross sections obtained below the Be[sup +](2[ital p]) threshold agree well with the results of other calculations and with ...
, Zhou, , Lin
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Branching ratios in the dissociative photoionization of iodomethane by photoelectron photoion coincidence

Physical Chemistry Chemical Physics, 2023
Internal energy selected valence ionized iodomethane exhibits more than 20 fragmentation pathways, identified based on the breakdown diagram, the kinetic energy release, and the known dissociative ionization energies.
Andras Bodi   +2 more
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Dissociative photoionization of N2O: Analytical photoion spectroscopy

The Journal of Chemical Physics, 1989
Branching ratios of ions produced from the dissociative photoionization of N2O have been measured by using a time-of-flight mass spectrometer and synchrotron radiation in the 15–36 eV region. The branching ratios in the Franck–Condon gap (15.0–16.4 eV) indicate that the autoionizing Rydberg states in this region predissociate to NO+ and O+ through ...
Toshio Masuoka, Shichiro Mitani
openaire   +1 more source

Photoionization and dissociative photoionization of the allyl radical, C3H5

International Journal of Mass Spectrometry, 2007
The photoionization and dissociative photoionization of the allyl radical in the VUV range was investigated using synchrotron radiation. Allyl radicals were generated by flash pyrolysis from allyl iodide and 1,5-hexadiene. Mass spectra show the appearance Of C3H3+ as a fragment in the dissociative photoionization of allyl above 10 eV.
Fischer, I.   +4 more
openaire   +1 more source

Photoionization of metal clusters

Physical Review B, 1996
The photoionization cross section of metal clusters is studied using simple theoretical models. In the case of small clusters, the plasmon is well below the photoionization threshold and the photoionization is dominated by simple independent-particle processes: One electron absorbs all the energy of the photon and immediately leaves the cluster.
, Koskinen, , Manninen
openaire   +2 more sources

Photoelectron–photoion–photoion coincidence in Ar dimers

Journal of Physics B: Atomic, Molecular and Optical Physics, 2004
Photoelectron–photoion–photoion coincidence momentum imaging was applied to study 2p photoemission from Ar dimers. We present measurements of the kinetic energy released in fragmentation of Ar++2, angular distributions of energetic fragments, angular distributions of photoelectrons in the laboratory frame and in the molecular frame.
A De Fanis   +13 more
openaire   +1 more source

Rearrangement effects in photoionization

Applied Optics, 1980
The recent developments and the physical backgrounds of the random phase approximation with exchange (RPAE) method are briefly discussed. The limitations of RPAE and the main features of a more general theory that would be free of RPAE difficulties are considered.
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Photoionization of Free Radicals

International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry, 1974
Since this is the first lecture at this Institute on photoionization and free radicals, permit me to take a few minutes to outline my concept of these terms.
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