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- Ch Jungen, Martin Jungen, Stephen T Pratt
- Philosophical transactions. Series A…
- 2012

The dissociative recombination (DR) of H(3)(+) ions with electrons, producing neutral atomic and molecular fragments, is driven primarily by the vibronic Jahn-Teller (JT) interaction between the electronic components of the pe' e(-)-H(3)(+) collision (Rydberg) channel. The JT parameters characterizing this interaction are therefore of great interest as they… (More)

- Matthis Eroms, Martin Jungen, Hans-Dieter Meyer
- The journal of physical chemistry. A
- 2010

The gas-phase photoelectron spectrum of water in the 12-20 eV energy range is simulated. The potential energy surfaces (PESs) of the three cationic states involved show several degeneracies. The ground state (X(2)B(1)) and the first excited state (A(2)A(1)) are degenerate components of a (2)Pi(u) state in linear geometry leading to Renner-Teller coupling… (More)

- Matthis Eroms, Oriol Vendrell, Martin Jungen, Hans-Dieter Meyer, Lorenz S. Cederbaum
- The Journal of chemical physics
- 2009

The resonant Auger decay of water molecules is investigated. Here, the excitation process, the motion of the nuclei, and the decay of the resonantly excited state take place on the same (femtosecond) time scale. Therefore, a multistep picture is not suitable. Instead, the nuclear wave packet at each instant of time is a result of several competing and… (More)

- Matthis Eroms, Martin Jungen, Hans-Dieter Meyer
- The journal of physical chemistry. A
- 2012

We present a theoretical investigation of the resonant Auger effect in gas-phase water. As in our earlier work, the simulation of nuclear dynamics is treated in a one-step picture, because excitation and decay events cannot be disentangled. Extending this framework, we now account for the vibronic coupling in the cationic final states arising from… (More)

- Ronen Goldstein, C. Figl, +4 authors F Rebentrost
- The Journal of chemical physics
- 2004

We report differential scattering experiments on the laser excitation of Na + M collision pairs with M = N(2), CO, C(2)H(2), and CO(2). The collision event is probed by the laser polarization revealing geometric and electronic properties of the collision pair. The experimental data are compared to the results of a Monte Carlo trajectory simulation using ab… (More)

- Ulrich Galster, U-C Müller, Martin Jungen, Hanspeter Helm
- Faraday discussions
- 2004

We determine experimentally the vector correlation among the three neutral ground state hydrogen atoms which appear in dissociation of neutral H3* molecules. The sum of the kinetic energies of the three H-atoms is fixed by selecting the energy of the H3* molecule by laser excitation in the range between 0.85 and 3.60 eV. The highly structured maps of… (More)

- B Jayachander Rao, Susanta Mahapatra, Horst Köppel, Martin Jungen
- The Journal of chemical physics
- 2005

The static and dynamic aspects of the Jahn-Teller (JT) interactions in the 3p(E') and 3d(E") Rydberg electronic states of H3 are analyzed theoretically. The static aspects are discussed based on recent ab initio quantum chemistry results, and the dynamic aspects are examined in terms of the vibronic spectra and nonradiative decay behavior of these states.… (More)

- Claudina Cossart-Magos, Martin Jungen, Joerg Stalder, Françoise Launay
- The Journal of chemical physics
- 2005

The absorption spectrum of jet-cooled CH(3)Cl was photographed from 165 to 117 nm (or 60,000 - 85,000 cm(-1), 7.5-10.5 eV) at a resolution limit of 0.0008 nm (0.3-0.6 cm(-1) or 0.04-0.08 meV). Even in the best structured region of the spectrum, from 70,000 to 85,000 cm(-1) (8.7-10.5 eV), observed bandwidths (full width at half maximum) are large, from 50 to… (More)

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