Results 191 to 200 of about 26,112 (242)
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Photoionization of N2O: Mechanisms of Photoionization and Ion Dissociation
Journal of Chemical Physics, 1977From 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.
J H D Eland, J Berkowitz
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Proceedings of the 2014 Annual Conference on Extreme Science and Engineering Discovery Environment, 2014
The time-dependent close-coupling method based on the Dirac equation is used to calculate single and double photoionization cross sections for Ne8+ in support of planned FLASH/DESY measurements. The fully correlated ground state radial wavefunction is obtained by solving a time independent inhomogeneous set of close-coupled equations.
M. S. Pindzola +2 more
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The time-dependent close-coupling method based on the Dirac equation is used to calculate single and double photoionization cross sections for Ne8+ in support of planned FLASH/DESY measurements. The fully correlated ground state radial wavefunction is obtained by solving a time independent inhomogeneous set of close-coupled equations.
M. S. Pindzola +2 more
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Physical Review Letters, 2002
We present the first experimental results of a technique called photoionization microscopy. Photoelectrons ejected in threshold photoionization of Xe are detected in a velocity map imaging apparatus, and interferences between various trajectories by which the electron moves from the atom to the detector are observed.
C, Nicole +4 more
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We present the first experimental results of a technique called photoionization microscopy. Photoelectrons ejected in threshold photoionization of Xe are detected in a velocity map imaging apparatus, and interferences between various trajectories by which the electron moves from the atom to the detector are observed.
C, Nicole +4 more
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Bonding in a Borylene Complex Investigated by Photoionization and Dissociative Photoionization
Chemistry – A European Journal, 2012Abstract The borylene complex [(OC) 5 CrBN(SiMe 3 ) 2 ] has been investigated by using threshold photoelectron–photoion coincidence spectroscopy with synchrotron radiation.
Fischer, Kathrin H. +6 more
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Photoion anisotropy in dissociative photoionization of CF3I
The Journal of Chemical Physics, 1990Dissociative photoionization of CF3I is studied in the region of the CF3I+ A state (13–15 eV). We observe a pronounced anisotropy of the I+ fragment ions in the time of flight coincidence spectra obtained at 14.24 and 15.0 eV photon energy, but having the same 13.3 eV parent ion internal energy.
Ivan Powis +3 more
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Photoion yield spectroscopy in the 4d photoionization of
Journal of Physics B: Atomic, Molecular and Optical Physics, 1998Using an ion-photon merged-beam apparatus, photoion yield spectra of and from the 4d photoionization of were measured as a function of photon energy in the range 110-160 eV. The measured spectra look very similar to those from a neutral Eu target. Both and yield spectra, a broad `giant resonance' appears at 140 eV with some preceding small peaks at 131.
Takao M Kojima +8 more
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On the absolute photoionization cross section and dissociative photoionization of cyclopropenylidene
Physical Chemistry Chemical Physics, 2016We report the determination of the absolute photoionization cross section of cyclopropenylidene, c -C 3 H 2 , and the heat of formation of the C 3 H radical and ion derived ...
Holzmeier, Fabian +5 more
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Theoretical Investigation on Photoionization and Dissociative Photoionization of Toluene
Chinese Journal of Chemical Physics, 2017The photoionization and dissociation photoionization of toluene have been studied using quantum chemistry methods. The geometries and frequencies of the reactants, transition states and products have been performed at B3LYP/6-311++G(d,p) level, and single-point energy calculations for all the stationary points were carried out at DFT calculations of ...
Yu-jie Zhao +7 more
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Photoelectron and photoion study of the valence photoionization of C60
Journal of Electron Spectroscopy and Related Phenomena, 2005Abstract Recent photoion yield measurements, done in the valence photoionization region of C60, reveal a high fraction of doubly and even triply charged ions [see A. Reinkoster, S. Korica, G. Prumper, J. Viefhaus, K. Godehusen, O. Schwarzkopf, M. Mast, U. Becker, J. Phys. B: At. Mol. Opt. Phys. 37 (2004) 2135]. The C 60 2 + intensity
Reinköster, A. +7 more
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Electronic Spectroscopy and Photoionization of LiBe
The Journal of Physical Chemistry A, 2021Dimers 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
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