Topic
Photoemission spectroscopy
About: Photoemission spectroscopy is a research topic. Over the lifetime, 10821 publications have been published within this topic receiving 250888 citations. The topic is also known as: photoelectron spectroscopy & PES.
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TL;DR: In this article, high-resolution zero kinetic energy photoelectron spectroscopy (ZEKE PES) with two-colour two-photon resonant ionization was used for the investigation of the benzene-argon van der Waals complex in a supersonic skimmed jet.
84 citations
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TL;DR: Double ionization of O 2 induced by photons from a synchrotron radiation source has been studied in an electron-electron coincidence experiment and a new technique has been developed wherein only electrons with near zero energy are detected by use of the penetrating field method.
Abstract: Double ionization of O 2 induced by photons from a synchrotron radiation source has been studied in an electron-electron coincidence experiment. A new technique has been developed wherein only electrons with near zero energy are detected by use of the penetrating field method. In this way high sensitivity and energy resolution have been attained allowing nineteen vibrational levels of the O 2 2+ ground state to be observed and molecular parameters of this state to be obtained
84 citations
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TL;DR: In this paper, a rotationally resolved zero-kinetic energy (ZEKE) photoelectron spectrum has been recorded for the lowest energy valence band of H2, and the rotational components for the H2+X ǫ 2Σ+g-H2 Xǫ 1ǫ +g (2−0) vibrational band show different relative intensities, compared to the conventional photoelectRON spectrum and to the predictions of theoretical calculations.
Abstract: A rotationally resolved zero‐kinetic‐energy (ZEKE) photoelectron spectrum has been recorded for the lowest energy valence band of H2. A coherent laser‐based extreme ultraviolet (XUV) source, tuned from 128 200–128 900 cm−1 excites the molecules to the ionization limit, and near‐threshold electrons, in a narrow energy bandwidth (a few cm−1 ) just below the ionization limit, are detected by field ionization as a function of laser wavelength. The rotational components for the H2+X 2Σ+g–H2 X 1Σ+g (2–0) vibrational band show different relative intensities, compared to the conventional photoelectron spectrum and to the predictions of theoretical calculations. The perturbed intensities of the N+=0←J‘=0 and the 0←2 rotational lines are shown to be attributable to an interaction of the pseudocontinuum of near‐threshold N+=0 np J’=1 Rydberg states, with the interloper N+=2, 26p J’=1 state. The enhanced intensity of the 2←0 rotational line is attributable to a ‘‘complex resonance’’ involving the v+=3 R(0) 8p0 trans...
84 citations
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TL;DR: In this paper, the valence bands of Cu, Ag and Ni have been obtained by X-ray photoemission spectroscopy (XPS) with a resolution of ≈ 0.5 eV.
83 citations
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TL;DR: In this article, the laser photoionization mass and photoelectron spectra of propargyl radical and two partially deuterated isotopomers are measured in a supersonic molecular beam.
Abstract: The laser photoionization mass and photoelectron spectra of propargyl radical (l-C{sub 3}H{sub 3}) and two partially deuterated isotopomers are measured in a supersonic molecular beam. Radicals were produced by flash pyrolysis in a heated supersonic tube nozzle. The PES exhibits an intense origin band at 8.67 {plus minus} 0.02 eV, which is assigned to the adiabatic ionization potential previously seen by electron impact mass spectroscopy. A second photoelectron band at higher energy is assigned to the previously unobserved first excited state of the propargyl cation. One highly anharmonic vibrational progression in the cation is also observed.
83 citations