Very slow spontaneous dissociation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">CO</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>observed by means of a heavy ion storage ring

Andersen, L. H.; Posthumus, Jan; Vahtras, Olav; Ågren, Hans; Elander, Nils; Nunez, Alonso; Scrinzi, Armin; Natiello, Mario A.; Larsson, Mats

doi:10.1103/physrevlett.71.1812

Cited by 111 publications

(81 citation statements)

References 26 publications

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“…The lower levels can be extremely long lived [17], while the upper levels may dissociate within picoseconds [10]. If population is transferred to such levels, the resulting 'Coulomb explosion' releases considerable kinetic energy (several eV per molecule), which has led to molecular dications being proposed as a source of propulsion [6].…”

Section: Introductionmentioning

confidence: 99%

Photo double ionization spectra of CO: comparison of theory with experiment

Eland¹,

Hochlaf

King

et al. 2004

J. Phys. B: At. Mol. Opt. Phys.

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High level ab initio calculations have been undertaken of potential energy curves of CO 2+ (and for the CO neutral ground state). The accuracy of the potentials was tested by a synthesis of the available vibrationally resolved threshold photoelectrons in coincidence (TPEsCO) and time of flight, photo electron photo electron coincidence (TOF-PEPECO) spectra of CO 2+ . Good agreement was found between experimental and theoretical spectra once relative energies of the calculated double ionization energies were slightly adjusted (by approximately 1%) to match experiment. Vibrational separations within individual electronic states are very well reproduced (the worst error is 0.07%).

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Section: Introductionmentioning

confidence: 99%

Photo double ionization spectra of CO: comparison of theory with experiment

Eland¹,

Hochlaf

King

et al. 2004

J. Phys. B: At. Mol. Opt. Phys.

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“…In fact, storage-ring experiments show that metastable dication states can survive for lifetimes of the order of at least seconds. 56,57 Of course, for a reaction between a dication and a neutral to be relevant in ionospheric chemistry, the relevant dication must possess at least one metastable electronic state which can be readily populated and can exist for a period of time sufficient to encounter neutral molecules.…”

Section: Introductionmentioning

confidence: 99%

The formation of NO+ from the reaction of N22+ with O2

Ricketts

Harper

et al. 2005

The Journal of Chemical Physics

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Guided-ion beam study of the O 2 + +C 2 H 2 charge-transfer and chemical reaction channels J. Chem. Phys. 110, 4291 (1999) We have studied the potentially ionospherically significant reaction between N 2 2+ with O 2 using position-sensitive coincidence spectroscopy. We observe both nondissociative and dissociative electron transfer reactions as well as two channels involving the formation of NO + . The NO + product is formed together with either N + and O in one bond-forming channel or O + and N in the other bond-forming channel. Using the scattering diagrams derived from the coincidence data, it seems clear that both bond-forming reactions proceed via a collision complex ͓N 2 O 2 ͔ 2+ . This collision complex then decays by loss of a neutral atom to form a daughter dication ͑NO 2 2+ or N 2 O 2+ ͒, which then decays by charge separation to yield the observed products.

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“…2 Within the Born-Oppenheimer approximation, the SO coupling can lead to the adiabatically mixed electronic states and some striking phenomena, e.g., the SO decay selectivity of O 2 at autoionization-states 3 and the unexpected long lifetime of doubly charged cation CO 2+ , 4 that were interpreted qualitatively with configuration-interaction (CI) calculations considering the SO perturbation (by introducing the Breit-Pauli operator H SO ). 5 In the molecular photoabsorption and the atom-molecule collision, the electronic state mixing is frequently exhibited as the specific anisotropic angular distribution of fragment or product, which arises from either the adiabatically SO coupling, the diabatic intersystem-crossing of the potential energy surfaces, or both.…”

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confidence: 99%

Communication: State mixing by spin-orbit coupling in the anionic chloroiodine dissociations

Xia

Wang

Xuan

et al. 2014

The Journal of Chemical Physics

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Three spin-orbit states, 12Π1/2, 22Π3/2, and 22Π1/2, of chloroiodine anion (ICl−) formed by low-energy electron attachment in the Franck-Condon region are associated with the dissociative limits of I− (1S0) and Cl (2P3/2) or Cl* (2P1/2) fragments. Within the adiabatic scheme, the presumptive Π-symmetry of the fragment angular distributions is dramatically changed to be the Π-Σ mixing symmetry, due to the significant spin-orbit interaction effect on the electronic state couplings of ICl−. The present experimental approach also enables us to separate the contributions of different electronic states from the mixed states, providing a crucial method for quantitatively evaluating the configuration-interaction wavefunctions.

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Very slow spontaneous dissociation ofCO2+observed by means of a heavy ion storage ring

Cited by 111 publications

References 26 publications

Photo double ionization spectra of CO: comparison of theory with experiment

Photo double ionization spectra of CO: comparison of theory with experiment

The formation of NO+ from the reaction of N22+ with O2

Communication: State mixing by spin-orbit coupling in the anionic chloroiodine dissociations

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