Evidence of single-photon two-site core double ionization of C 2H2 molecules

P. Lablanquie; T. P. Grozdanov; M. Aitnik; S. Carniato; P. Selles; L. Andric; J. Palaudoux; F. Penent; H. Iwayama; E. Shigemasa; Y. Hikosaka; K. Soejima; M. Nakano; I. H. Suzuki; K. Ito

doi:10.1103/PhysRevLett.107.193004

Evidence of single-photon two-site core double ionization of C ₂H₂ molecules

P. Lablanquie^*, T. P. Grozdanov, M. Aitnik, S. Carniato, P. Selles, L. Andric, J. Palaudoux, F. Penent, H. Iwayama, E. Shigemasa, Y. Hikosaka, K. Soejima, M. Nakano, I. H. Suzuki, K. Ito

^*Corresponding author for this work

Faculty of Liberal Arts and Sciences

Research output: Contribution to journal › Article › peer-review

81 Scopus citations

Abstract

We observe the formation in a single-photon transition of two core holes, each at a different carbon atom of the C₂H₂ molecule. At a photon energy of 770.5 eV, the probability of this 2-site core double ionization amounts to 1.6±0.4% of the 1-site core double ionization. A simple theoretical model based on the knockout mechanism gives reasonable agreement with experiment. Spectroscopy and Auger decays of the associated double core hole states are also investigated.

Original language	English
Article number	193004
Journal	Physical Review Letters
Volume	107
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.107.193004
State	Published - 2011/11/04

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.107.193004

Cite this

Lablanquie, P., Grozdanov, T. P., Aitnik, M., Carniato, S., Selles, P., Andric, L., Palaudoux, J., Penent, F., Iwayama, H., Shigemasa, E., Hikosaka, Y., Soejima, K., Nakano, M., Suzuki, I. H., & Ito, K. (2011). Evidence of single-photon two-site core double ionization of C ₂H₂ molecules. Physical Review Letters, 107(19), Article 193004. https://doi.org/10.1103/PhysRevLett.107.193004

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title = "Evidence of single-photon two-site core double ionization of C 2H2 molecules",

abstract = "We observe the formation in a single-photon transition of two core holes, each at a different carbon atom of the C2H2 molecule. At a photon energy of 770.5 eV, the probability of this 2-site core double ionization amounts to 1.6±0.4% of the 1-site core double ionization. A simple theoretical model based on the knockout mechanism gives reasonable agreement with experiment. Spectroscopy and Auger decays of the associated double core hole states are also investigated.",

author = "P. Lablanquie and Grozdanov, {T. P.} and M. Aitnik and S. Carniato and P. Selles and L. Andric and J. Palaudoux and F. Penent and H. Iwayama and E. Shigemasa and Y. Hikosaka and K. Soejima and M. Nakano and Suzuki, {I. H.} and K. Ito",

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AU - Lablanquie, P.

AU - Grozdanov, T. P.

AU - Aitnik, M.

AU - Carniato, S.

AU - Selles, P.

AU - Andric, L.

AU - Palaudoux, J.

AU - Penent, F.

AU - Iwayama, H.

AU - Shigemasa, E.

AU - Hikosaka, Y.

AU - Soejima, K.

AU - Nakano, M.

AU - Suzuki, I. H.

AU - Ito, K.

PY - 2011/11/4

Y1 - 2011/11/4

N2 - We observe the formation in a single-photon transition of two core holes, each at a different carbon atom of the C2H2 molecule. At a photon energy of 770.5 eV, the probability of this 2-site core double ionization amounts to 1.6±0.4% of the 1-site core double ionization. A simple theoretical model based on the knockout mechanism gives reasonable agreement with experiment. Spectroscopy and Auger decays of the associated double core hole states are also investigated.

AB - We observe the formation in a single-photon transition of two core holes, each at a different carbon atom of the C2H2 molecule. At a photon energy of 770.5 eV, the probability of this 2-site core double ionization amounts to 1.6±0.4% of the 1-site core double ionization. A simple theoretical model based on the knockout mechanism gives reasonable agreement with experiment. Spectroscopy and Auger decays of the associated double core hole states are also investigated.

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