VUV photoionization of (CH 3I) n ( n=1–4) molecules

VUV photoionization of (CH 3I) n ( n=1–4) molecules

The photoionization efficiency (PIE) spectra of the ions produced by the VUV synchrotron radiation photoionization of (CH 3I) n ( n=1–4) molecules in the photon energy range of 8–35 eV have been measured by using time-of-flight (TOF) mass spectrometer with supersonic cooling techniques. The appearan...

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Veröffentlicht in:Chemical physics letters 2001-09, Vol.345 (1), p.57-64
Hauptverfasser: Chen, Jun, Pei, Linsen, Shu, Jinian, Chen, Congxiang, Ma, Xingxiao, Shen, Liusi, Zhang, Yunwu
Format: Artikel
Sprache:eng
Schlagworte:
Atomic and molecular clusters
Atomic and molecular physics
Autoionization, photoionization, and photodetachment
Exact sciences and technology
Molecular properties and interactions with photons
Photon interactions with molecules
Physics
Stability and fragmentation of clusters
Studies of special atoms, molecules and their ions
clusters
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container_end_page 64
container_issue 1
container_start_page 57
container_title Chemical physics letters
container_volume 345
creator Chen, Jun
Pei, Linsen
Shu, Jinian
Chen, Congxiang
Ma, Xingxiao
Shen, Liusi
Zhang, Yunwu
description The photoionization efficiency (PIE) spectra of the ions produced by the VUV synchrotron radiation photoionization of (CH 3I) n ( n=1–4) molecules in the photon energy range of 8–35 eV have been measured by using time-of-flight (TOF) mass spectrometer with supersonic cooling techniques. The appearance potentials (APs) of all the observed fragment ions have been determined from the PIE curves. Based on these data, the bond energies ( D 0), standard formation enthalpies ( Δ f H 0 °) and proton affinities (PA 0) of the related fragments were obtained. Several autoionization structures of CH 3I in the PIE spectrum of CH 3I + were assigned.
doi_str_mv 10.1016/S0009-2614(01)00864-8
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The appearance potentials (APs) of all the observed fragment ions have been determined from the PIE curves. Based on these data, the bond energies ( D 0), standard formation enthalpies ( Δ f H 0 °) and proton affinities (PA 0) of the related fragments were obtained. 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The appearance potentials (APs) of all the observed fragment ions have been determined from the PIE curves. Based on these data, the bond energies ( D 0), standard formation enthalpies ( Δ f H 0 °) and proton affinities (PA 0) of the related fragments were obtained. 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subjects Atomic and molecular clusters
Atomic and molecular physics
Autoionization, photoionization, and photodetachment
Exact sciences and technology
Molecular properties and interactions with photons
Photon interactions with molecules
Physics
Stability and fragmentation of clusters
Studies of special atoms, molecules and their ions
clusters
title VUV photoionization of (CH 3I) n ( n=1–4) molecules
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