Two-Photon Inner-Shell Ionization in the Extreme Ultraviolet

V. Richardson; J.T. Costello; D. Cubaynes; S. Duesterer; J. Feldhaus; Hugo Van Der Hart; P. Juranic; W.B. Li; M. Meyer; M. Richter; A.A. Sorokin; K. Tiedke

doi:10.1103/PhysRevLett.105.013001

Two-Photon Inner-Shell Ionization in the Extreme Ultraviolet

V. Richardson, J.T. Costello, D. Cubaynes, S. Duesterer, J. Feldhaus, Hugo Van Der Hart, P. Juranic, W.B. Li, M. Meyer, M. Richter, A.A. Sorokin, K. Tiedke

School of Mathematics and Physics

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Abstract

We have observed the simultaneous inner-shell absorption of two extreme-ultraviolet photons by a Xe atom in an experiment performed at the short-wavelength free electron laser facility FLASH. Photoelectron spectroscopy permitted us to unambiguously identify a feature resulting from the ionization of a single electron of the 4d subshell of Xe by two photons each of energy (93 +/- similar to 1) eV. The feature's intensity has a quadratic dependence on the pulse energy. The results are discussed and interpreted within the framework of recent results of ion spectroscopy experiments of Xe obtained at ultrahigh irradiance in the extreme-ultraviolet regime.

Original language	English
Article number	013001
Number of pages	4
Journal	Physical Review Letters
Volume	105
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.105.013001
Publication status	Published - 29 Jun 2010

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.105.013001

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title = "Two-Photon Inner-Shell Ionization in the Extreme Ultraviolet",

abstract = "We have observed the simultaneous inner-shell absorption of two extreme-ultraviolet photons by a Xe atom in an experiment performed at the short-wavelength free electron laser facility FLASH. Photoelectron spectroscopy permitted us to unambiguously identify a feature resulting from the ionization of a single electron of the 4d subshell of Xe by two photons each of energy (93 +/- similar to 1) eV. The feature's intensity has a quadratic dependence on the pulse energy. The results are discussed and interpreted within the framework of recent results of ion spectroscopy experiments of Xe obtained at ultrahigh irradiance in the extreme-ultraviolet regime. ",

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AU - Richardson, V.

AU - Costello, J.T.

AU - Cubaynes, D.

AU - Duesterer, S.

AU - Feldhaus, J.

AU - Van Der Hart, Hugo

AU - Juranic, P.

AU - Li, W.B.

AU - Meyer, M.

AU - Richter, M.

AU - Sorokin, A.A.

AU - Tiedke, K.

PY - 2010/6/29

Y1 - 2010/6/29

N2 - We have observed the simultaneous inner-shell absorption of two extreme-ultraviolet photons by a Xe atom in an experiment performed at the short-wavelength free electron laser facility FLASH. Photoelectron spectroscopy permitted us to unambiguously identify a feature resulting from the ionization of a single electron of the 4d subshell of Xe by two photons each of energy (93 +/- similar to 1) eV. The feature's intensity has a quadratic dependence on the pulse energy. The results are discussed and interpreted within the framework of recent results of ion spectroscopy experiments of Xe obtained at ultrahigh irradiance in the extreme-ultraviolet regime.

AB - We have observed the simultaneous inner-shell absorption of two extreme-ultraviolet photons by a Xe atom in an experiment performed at the short-wavelength free electron laser facility FLASH. Photoelectron spectroscopy permitted us to unambiguously identify a feature resulting from the ionization of a single electron of the 4d subshell of Xe by two photons each of energy (93 +/- similar to 1) eV. The feature's intensity has a quadratic dependence on the pulse energy. The results are discussed and interpreted within the framework of recent results of ion spectroscopy experiments of Xe obtained at ultrahigh irradiance in the extreme-ultraviolet regime.

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DO - 10.1103/PhysRevLett.105.013001

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JO - Physical Review Letters

JF - Physical Review Letters

IS - 1

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ER -

Two-Photon Inner-Shell Ionization in the Extreme Ultraviolet

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