H2+ formation from H2O+ mediated by the core-excitation-induced nuclear motion in H2O

A. Hiraya, K. Nobusada, M. Simon, K. Okada, T. Tokushima, Y. Senba, H. Yoshida, K. Kamimori, H. Okumura, Y. Shimizu, A. L. Thomas, P. Millie, I. Koyano, K. Ueda

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Abstract

The vibrational structure of the O 1s-12b2 core-excited state of H2O is observed and ascribed to the mixture of symmetric stretching and bending motions with a1 symmetry. The formation of H2+ is found to increase linearly with an increase in energy stored in the nuclear motion of the O 1s-12b2 state, demonstrating that this dissociation channel is mediated by the nuclear motion in the core-excited state. The reaction pathway to the H2+ formation along the Auger final state of H2O+, mediated by the nuclear motion before the Auger decay, is discussed with the help of ab initio potential surfaces of the Auger final states.

Original languageEnglish
Article number042705
Pages (from-to)1-5
Number of pages5
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume63
Issue number4
DOIs
Publication statusPublished - 2001

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Hiraya, A., Nobusada, K., Simon, M., Okada, K., Tokushima, T., Senba, Y., Yoshida, H., Kamimori, K., Okumura, H., Shimizu, Y., Thomas, A. L., Millie, P., Koyano, I., & Ueda, K. (2001). H2+ formation from H2O+ mediated by the core-excitation-induced nuclear motion in H2O. Physical Review A - Atomic, Molecular, and Optical Physics, 63(4), 1-5. [042705]. https://doi.org/10.1103/PhysRevA.63.042705