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Unveiling and driving hidden resonances with high-fluence, high-intensity x-ray pulses.
- Source :
-
Physical review letters [Phys Rev Lett] 2011 Dec 02; Vol. 107 (23), pp. 233001. Date of Electronic Publication: 2011 Nov 30. - Publication Year :
- 2011
-
Abstract
- We show that high fluence, high-intensity x-ray pulses from the world's first hard x-ray free-electron laser produce nonlinear phenomena that differ dramatically from the linear x-ray-matter interaction processes that are encountered at synchrotron x-ray sources. We use intense x-ray pulses of sub-10-fs duration to first reveal and subsequently drive the 1s↔2p resonance in singly ionized neon. This photon-driven cycling of an inner-shell electron modifies the Auger decay process, as evidenced by line shape modification. Our work demonstrates the propensity of high-fluence, femtosecond x-ray pulses to alter the target within a single pulse, i.e., to unveil hidden resonances, by cracking open inner shells energetically inaccessible via single-photon absorption, and to consequently trigger damaging electron cascades at unexpectedly low photon energies.<br /> (© 2011 American Physical Society)
Details
- Language :
- English
- ISSN :
- 1079-7114
- Volume :
- 107
- Issue :
- 23
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 22182083
- Full Text :
- https://doi.org/10.1103/PhysRevLett.107.233001