Published January 2011 | Version v1
Journal article Metadata-only

Effect of the charge localization in the C+-H+ fragmentation pathway of the ethyne dication

Creators

  • 1. CNR-IMIP, Istituto di Metodologie Inorganiche e dei Plasmi, Area della Ricerca di Roma 1, Via Salaria km 29.300 CP10, I-00016 Monterotondo Scalo, Rome (Italy)
  • 2. CNR-ISMN Istituto dei Materiali Nanostrutturati, Via dei Taurini 19, I-00185 Rome (Italy)

Description

The C+-H+ channel in the fragmentation of the ethyne dication following inner-shell ionization has been studied by Auger electron-ion-ion coincidence spectroscopy. The ion-ion coincidence map shows a peculiar feature which corresponds to the emission of both the H+ and C+ ions in the same direction. The analysis of the data, complemented by ab initio calculations, suggests an interpretation in terms of a two-step, asynchronous concerted reaction, in which the charge of the ethynyl intermediate ion localizes on the terminal carbon atom.

Additional details

Identifiers

DOI
10.1103/PhysRevA.83.014501;

Publishing Information

Journal Title
Physical Review. A
Journal Volume
83
Journal Issue
1
Journal Page Range
p. 014501-014501.4
ISSN
1050-2947
CODEN
PLRAAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43016083
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Descriptors DEI
ACETYLENE; AUGER EFFECT; CARBON; CARBON IONS; COINCIDENCE SPECTROMETRY; ELECTRONS; FRAGMENTATION; HYDROGEN IONS 1 PLUS; INNER-SHELL IONIZATION; ION EMISSION
Descriptors DEC
ALKYNES; CATIONS; CHARGED PARTICLES; COINCIDENCE METHODS; COUNTING TECHNIQUES; ELEMENTARY PARTICLES; ELEMENTS; EMISSION; FERMIONS; HYDROCARBONS; HYDROGEN IONS; IONIZATION; IONS; LEPTONS; NONMETALS; ORGANIC COMPOUNDS

Optional Information

Notes
(c) 2011 American Institute of Physics