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Showing 1 to 8 of 8 for “"photoelectron-photoion coincidence"”.
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Very accurate gas-phase thermochemistry through photoelectron photoion coincidence (PEPICO) spectroscopy
<p>Five projects are presented here that use Photoelectron Photoion Coincidence (PEPICO) Spectroscopy to determine high-accuracy thermochemical data on small and intermediate size molecules and radicals that are relevant in modeling combustion and atmospheric processes. Some of the experiments were …
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Photoionization Mass Spectrometry and Photoelectron-Photoion Coincidence (PEPICO) Spectroscopy Studies of Select Biofuel Molecules
… of the newly obtained data. It presents some photoionization mass spectrometry studies on γ-valerolactone (GVL). The photoionization cross section of GVL and some suspected combustion products are measured. In addition, several dissociative ions are determined. Theoretical calculations are …
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A tale of two small oxygenated molecules as told by photoelectron photoion coincidence spectroscopy
<p>Photoelectron Photoion Coincidence (PEPICO) Spectroscopy studies on two small oxygenated species are presented here. Diethyl Ether (Et2O) and Acetic Anhydride (AcOAc) were chosen because of their and their fragments' relevance to combustion chemistry. The Imaging PEPICO (iPEPICO) experiment at …
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Fotodestruição do benzeno em ambientes interestelares
… the photon energy. We had experimentally study photoionization and photodissociation processes of the benzene (C6H6), and the deuterated benzene (C6D6). Benzene is an essential intermediate in the formation pathways of polycyclic aromatic hydrocarbons (PAHs), which are thought to be responsible …
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The Investigation and Characterization of the Reaction of 2-Methylfuran and 2-Methyl-3-Buten-2-Ol with O(3P) and the Photodissociation of Xylyl Bromide Isomers
… analyzed using a multiplexed chemical kinetics photoionization mass spectrometer with tunable synchrotron radiation. Products of the different reactions were identified using kinetic profiles and further characterized using the photoionization spectra. The amount of each species was calculated …
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Vacuum-ultraviolet photoexcitation of some non-metal halides
… extracted from action spectra. The threshold photoelectron photoion coincidence (TPEPICO) spectroscopy of CX\(_2\)Y\(_2^+\) (X, Y = H, Cl or Br), SeFe\(_6^+\), TeF\(_6^+\), SF\(_5\)CF\(_3^+\) and SF\(_5\)Cl\(^+\) has been studied following gaseous photoexcitation in the range ca. 12-27 eV …
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Ionisation studies of chlorinated and fluorinated compounds
… molecules have been studied using threshold photoelectron photoion coincidence and selected ion flow tube techniques for cations and an electron attachment mass spectrometer for anions. Cation formation has been studied for fluoroform (CHF\(_3\)), octafluorocyclobutane (\(c\)-C\(_4\)F\(_8\)), …
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Accurate ionic bond energy measurements with TCID mass spectrometry and imaging PEPICO spectroscopy
… parameters.</p><p>In the second project, imaging photoelectron photoion coincidence (iPEPICO) spectroscopy has been used to determine 0 K appearance energies for the unimolecular dissociation reactions of several energy selected 1-alkyl iodide cations n-C<sub>n</sub>H<sub>2n+1</sub>I<sup>+</sup> → …