Results 161 to 170 of about 5,298 (198)
Attosecond Delays in Molecular Photoionization [PDF]
Physical Review Letters, 2016 5 pages, 3 figures, accepted in Phys.
Martin Huppert +2 more
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Photoionization of metal clusters
Physical Review B, 1996The 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
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Photoelectron–photoion–photoion coincidence in Ar dimers
Journal of Physics B: Atomic, Molecular and Optical Physics, 2004Photoelectron–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
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Double photoionization of methane
Physical Review A, 1985Double photoionization (DPI) of ${\mathrm{CH}}_{4}$ has been studied in the photon-energy range 35--52 eV by the photoion-photoion coincidence (PIPICO) method. Throughout this energy range the measured DPI cross section is found to be much smaller than that of the corresponding process in the isoelectronic neon atom.
, Dujardin, , Winkoun, , Leach
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Rearrangement effects in photoionization
Applied Optics, 1980The 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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Chemical Physics, 1984
Abstract Doubly charged sulphur dioxide cations (SO2++) are produced by photoionization with synchrotron radiation from ACO in the excitation-energy range 34–54 eV. A new photoion-photoion coincidence (PIPICO) experiment is described in which coincidences between photoion fragments originating from the dissociation of the doubly charged parent cation
Gérald Dujardin +4 more
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Abstract Doubly charged sulphur dioxide cations (SO2++) are produced by photoionization with synchrotron radiation from ACO in the excitation-energy range 34–54 eV. A new photoion-photoion coincidence (PIPICO) experiment is described in which coincidences between photoion fragments originating from the dissociation of the doubly charged parent cation
Gérald Dujardin +4 more
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Photoionization of Free Radicals
International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry, 1974Since 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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The Journal of Chemical Physics, 2004
The dissociative photoionization of CH2Br2 in a region ∼10–24 eV was investigated with photoionization mass spectroscopy using a synchrotron radiation source. An adiabatic ionization energy of 10.25 eV determined for CH2Br2 agrees satisfactorily with predictions of 10.26 and 10.25 eV with G2 and G3 methods, respectively.
Su-Yu, Chiang +3 more
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The dissociative photoionization of CH2Br2 in a region ∼10–24 eV was investigated with photoionization mass spectroscopy using a synchrotron radiation source. An adiabatic ionization energy of 10.25 eV determined for CH2Br2 agrees satisfactorily with predictions of 10.26 and 10.25 eV with G2 and G3 methods, respectively.
Su-Yu, Chiang +3 more
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International Journal of Mass Spectrometry and Ion Processes, 1997
Abstract The photoionization and dissociative photoionizations of dichlorodifluoromethane have been studied both experimentally and theoretically. In experiments, photoionization efficiency spectra for CF 2 Cl 2 + , CFCl 2 + , CF 2 Cl + , CFCl + , CF 2 + , CCl + , CF + and Cl + have been measured.
Liusi Sheng +5 more
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Abstract The photoionization and dissociative photoionizations of dichlorodifluoromethane have been studied both experimentally and theoretically. In experiments, photoionization efficiency spectra for CF 2 Cl 2 + , CFCl 2 + , CF 2 Cl + , CFCl + , CF 2 + , CCl + , CF + and Cl + have been measured.
Liusi Sheng +5 more
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Photoionization with excitation and double photoionization of the helium isoelectronic sequence
Physical Review A, 1998We perform a systematic study of photoionization with excitation and double photoionization of ${\mathrm{H}}^{\ensuremath{-}},$ He, and ${\mathrm{Li}}^{+}$ using the convergent close-coupling formalism. The present calculations cover the photon energy range from the double-ionization threshold to 10 keV where the results go over continuously to the ...
Anatoli S. Kheifets, Igor Bray
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