Probing the potential energy surface by high resolution X-Ray absorption spectroscopy: the umbrella motion of the core-excited CH3 free radicals (Articolo in rivista)

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  • Probing the potential energy surface by high resolution X-Ray absorption spectroscopy: the umbrella motion of the core-excited CH3 free radicals (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevA.76.022509 (literal)
Alternative label
  • M. Alagia(1-2), M. Lavollee, R. Richter, U. Ekstrom, V. Carravetta (6), D. Stranges, B. Brunetti(1), S. Stranges (2007)
    Probing the potential energy surface by high resolution X-Ray absorption spectroscopy: the umbrella motion of the core-excited CH3 free radicals
    in Physical review. A
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M. Alagia(1-2), M. Lavollee, R. Richter, U. Ekstrom, V. Carravetta (6), D. Stranges, B. Brunetti(1), S. Stranges (literal)
Pagina inizio
  • 022509 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://link.aps.org/doi/10.1103/PhysRevA.76.022509 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 76 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. CNR, ISMN, I-00185 Rome, Italy 2. TASC CNR, I-34012 Trieste, Italy 3. CNRS, LIXAM, F-91898 Orsay, France 4. Sincrotrone Trieste, I-34012 Trieste, Italy 5. Linkoping Univ, Dept Phys Chem & Biol IFM, S-58183 Linkoping, Sweden 6. CNR, Inst Chem Phys Proc, I-56124 Pisa, Italy 7. Univ Roma La Sapienza, Dipartimento Chim, I-00185 Rome, Italy 8. Univ Roma La Sapienza, INSTM, I-00185 Rome, Italy (literal)
Titolo
  • Probing the potential energy surface by high resolution X-Ray absorption spectroscopy: the umbrella motion of the core-excited CH3 free radicals (literal)
Abstract
  • A detailed study of the umbrellalike vibration in inner-shell spectroscopy is presented. The high-resolution x-ray absorption spectrum for the lowest lying core excitation of the CH3 free radical was recorded. High quality potential energy surfaces (PES) for the initial and final states of the transition were calculated as a function of the symmetrical stretching and the umbrella deformation coordinates. The strong anharmonicity along the umbrella coordinate in the double-well region of the PES of the core excited state has a strong effect on the bending vibrational progressions. The excellent agreement between the experiment and theory allows an accurate spectroscopic characterization of the vibrational structure of the electronic transition, and the estimation of the umbrella inversion time of 149 fs. (literal)
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