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Two-photon inner-shell ionization in the extreme ultraviolet

Richardson, Vincent and Costello, John T. and Cubaynes, D. and Düsterer, S. and Feldhaus, J. and van der Hart, H. and Juranić, P. and Li, W. and Meyer, M. and Richter, M. and Sorokin, A. and Tiedke, K. (2010) Two-photon inner-shell ionization in the extreme ultraviolet. Physical Review Letters, 105 (1). 013001-1-013001-4. ISSN 0031-9007

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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±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.

Item Type:Article (Published)
Refereed:Yes
Subjects:Physical Sciences > Physics
DCU Faculties and Centres:Research Initiatives and Centres > National Centre for Plasma Science and Technology (NCPST)
DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences
Publisher:The American Physical Society
Official URL:http://dx.doi.org/10.1103/PhysRevLett.105.013001
Copyright Information:© 2010 The American Physical Society
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Science Foundation Ireland, Irish Research Council for Science Engineering and Technology
ID Code:15660
Deposited On:12 Aug 2010 12:06 by DORAS Administrator. Last Modified 12 Aug 2010 12:15

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