Journal ArticleDOI
Kinetic-energy release in the dissociation of no2+
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TLDR
In this article, the kinetic energy distribution of the fragment ions (N+ and O+) produced in dissociative double photoionization of nitric oxide was determined by analyzing the photoion-photoion coincidence (PIPICO) spectra measured in the region 42-100 eV by use of a time-of-flight mass spectrometer and synchrotron radiation.Abstract:
Kinetic‐energy release distributions of the fragment ions (N+ and O+) produced in dissociative double photoionization of nitric oxide have been determined by analyzing the photoion–photoion coincidence (PIPICO) spectra measured in the region 42–100 eV by use of a time‐of‐flight mass spectrometer and synchrotron radiation. At low excitation energies (42–46 eV), low kinetic‐energy components were observed, which cannot be explained by a simple framework whereby a doubly charged molecular ion is directly produced upon single photon absorption which then dissociates into two ionic fragments. The majority of the ion pairs are produced through indirect routes, in which highly excited NO*+ and NO** (double Rydberg) converging to the high‐lying NO2+ electronic states autoionize before and after dissociation.read more
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Doubly-charged ions in the planetary ionospheres: a review
Roland Thissen,Olivier Witasse,Odile Dutuit,Odile Dutuit,Cyril Simon Wedlund,Guillaume Gronoff,Jean Lilensten +6 more
TL;DR: This paper presents a review of the current knowledge on the doubly-charged atomic and molecular positive ions in the planetary atmospheres of the Solar System, focused on the terrestrial planets which have a dense atmosphere of N(2) or CO(2), but also includes Titan, the largest satellite of Saturn.
Journal ArticleDOI
Direct and indirect dissociative double photoionization of diatomic molecules
S Hsieh,J H D Eland +1 more
TL;DR: In this article, an enhanced photoelectron - ion - ion triple coincidence technique was used to eliminate the effect of the target molecule thermal velocity on measured ion pair kinetic energy releases, and the results were compared with calculated distributions for direct vertical transitions to theoretically known dication states.
Journal ArticleDOI
Dissociative double photoionization of CO2 molecules in the 36–49 eV energy range: angular and energy distribution of ion products
Michele Alagia,Pietro Candori,Stefano Falcinelli,M. Lavollée,Fernando Pirani,Robert Richter,Stefano Stranges,Franco Vecchiocattivi +7 more
TL;DR: Dissociative double photoionization of CO(2), producing CO(+) and O(+) ions, has been studied in the 36-49 eV energy range using synchrotron radiation and ion-ion coincidence imaging detection to imply that the molecule photoionizes when oriented parallel to that direction and also that the CO( 2)(2+) dication just formed dissociates in a time shorter than its typical rotational period.
Journal ArticleDOI
Photoemission in the NO molecular frame induced by soft-x-ray elliptically polarized light above the N(1s) -1 and O(1s) -1 ionization thresholds
W.B. Li,Raffaele Montuoro,J C Houver,Loic Journel,A. Haouas,Marc Simon,R. R. Lucchese,Danielle Dowek +7 more
TL;DR: In this paper, the velocity vector correlation method, based on imaging and time-of-flight-resolved electron-ion-ion coincidence technique, with the use of elliptically polarized light, was used for inner-shell photoionization of linear molecules.
Journal ArticleDOI
Doppler-free kinetic energy release spectrum of NO2+ and ab initio CI calculations
TL;DR: In this paper, a Doppler-free kinetic energy release spectroscopy and ab initio CI calculations were used to study the NO 2+ dication in the C 2 Σ + and 2 4 Π states.
References
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Journal ArticleDOI
Determination of the K-LL Auger spectra of N2, O2, CO, NO, H2O, and CO2
TL;DR: In this paper, a double focusing electrostatic electron spectrometer has been used to measure the K-LL Auger spectra resulting from electron impact for each of the elements in the gaseous molecules N2, O2, CO, NO, H2O, and CO2.
Journal ArticleDOI
Double and Triple Ionization in Molecules Induced by Electron Impact
F. H. Dorman,J. D. Morrison +1 more
TL;DR: In this paper, double and triple ionization by electron impact in molecules is examined and the data support the view that the threshold law for the probability of double ionization is a square-law function of the excess electron energy.
Journal ArticleDOI
The dynamics of three-body dissociations of dications studied by the triple coincidence technique PEPIPICO
TL;DR: The triple coincidence PEPIPICO experiment was used in this article to study the dynamics of fragmentations of a dication into two charged and one neutral particle, and the initial momenta and relative angles of all three fragments are usually determined, and clear indications are obtained on whether the breakdown is instantaneous or involves sequential steps.
BookDOI
Vacuum ultraviolet photoionization and photodissociation of molecules and clusters
TL;DR: In this article, a review of the recent progress in vacuum ultraviolet photoionization and photodissociation processes is presented, with a detailed review of major experimental developments in the studies of single vacuum ultraviolet photon ionization and dissociation processes of gaseous molecules and clusters.
Journal ArticleDOI
On the interpretation of molecular valence Auger spectra
TL;DR: The interpretation of molecular valence Auger spectra by means of ab initio computational methods is discussed in this article, where the feasibility of a procedure based on single ionization potentials and of CI calculations using frozen orbitals is tested.
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