Journal Article

PHPPUBDB-10798

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Direct autocorrelation of soft-x-ray free-electron-laser pulses by time-resolved two-photon double ionization of He

Mitzner, R.Extern* ; Sorokin, A. A. ; Siemer, B.Extern* ; Roling, S. ; Rutkowski, M.Extern* ; Zacharias, H.Extern* ; Neeb, M.Extern* ; Noll, T. ; Siewert, F.Extern* ; Eberhardt, W. ; Richter, M. ; Juranic, P.Extern* ; Tiedtke, K.DESY* ; Feldhaus, J.Extern* ; DESY

2009
APS College Park, Md.

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Please use a persistent id in citations: doi:10.1103/PhysRevA.80.025402  doi:10.3204/PHPPUBDB-10798

Abstract: The pulse duration of soft x-ray free-electron laser (FEL) radiation is directly measured by time-resolved observation of doubly charged helium ions at 51.8 eV. A wave front splitting autocorrelator produces two correlated FEL pulses with a resolution of better than a femtosecond. In the interesting intensity range from 10$_{13}$ to 10$_{16]$ W/cm$_2$ direct and sequential double ionization contribute to the ion yield which has significant influence on the correlation width, being a general feature at high photon energies. Here, a duration of τL=(29±5) fs is derived for the soft x-ray pulses at FLASH.

Note: © The American Physical Society

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Contributing Institute(s):

1. Experiments with synchrotron radiation (HASYLAB(-2012))

Research Program(s):

1. FLASH Beamline BL3 (POF1-550) (POF1-550)

Experiment(s):

1. FLASH Beamline BL3 (FLASH)

Appears in the scientific report 2009

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Database coverage:
; JCR ; No Author Disambiguation ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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