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Role of the Renner-Teller effect after core hole excitation in the dissociation dynamics of carbon dioxide dication
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10.1063/1.3692293
/content/aip/journal/jcp/136/10/10.1063/1.3692293
http://aip.metastore.ingenta.com/content/aip/journal/jcp/136/10/10.1063/1.3692293
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Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic diagram of the geometry of the setup.  is perpendicular to the propagation direction of the synchrotron radiation and to the spectrometer axis (vertical). P is the momentum vector of an ion. (b) Detector image of O+ measured in coincidence with CO+ at the C 1s→ π* resonance. The arrow indicates the direction of the polarization vector. (c) The distribution of measured ions as a function of angle θ is shown including statistical error bars. Each point represents the integration over ϕ = 0 → π, and over Δθ = 11.25°. The solid line shows the best fit of Eq. (4). The best fit was found for β = −0.48 ± 0.02.

Image of FIG. 2.
FIG. 2.

(a) Distribution of C+ ions measured in the C+/ coincidence events at the C 1s→ π* resonance. The arrow indicates the direction of the polarization vector. (b) The distribution of ions as a function of angle θ as in Fig. 1. The lines shows the best fits of Eq. (4). (c) The distribution of total kinetic energy of the fragment pair is shown for excitation at C 1s→ π* and O 1s→ π*.

Image of FIG. 3.
FIG. 3.

Dalitz plots of the fragments measured at different photon energies for three-body fragmentation events. The upper plots are for detection of C+ in coincidence with O+, and the lower plots show the distribution for detection of three charged fragments. (a) Photon energy of 60 eV, (b,b) 270 eV, (c,c) 290.7 eV (C 1s→ π*), and (d) 535.4 eV (O 1s→ π*).

Image of FIG. 4.
FIG. 4.

Dalitz plots of kinetic-energy filtered subsets of ionic C and O fragments measured at the C 1s-π* resonance. (a) Events fulfilling the criteria 1 eV 5 eV. These correspond to sequential dissociation originating in the carbon dioxide dication. (b) Coincidence events fulfilling the criteria −2 eV <E(O +) − E(O) <2 eV and 13 eV <E(O +) + E(O). These correspond to concerted breakup from the linear trication. (c) The high-energy carbon fragment (5 eV <E(C +)) indicates concerted breakup from the severely bent dication. (d) Angular correlation plots for the data from the subsets in (b) and (c).

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/content/aip/journal/jcp/136/10/10.1063/1.3692293
2012-03-09
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Role of the Renner-Teller effect after core hole excitation in the dissociation dynamics of carbon dioxide dication
http://aip.metastore.ingenta.com/content/aip/journal/jcp/136/10/10.1063/1.3692293
10.1063/1.3692293
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