Temporal coherence effects in multiple ionization of N{sub 2} via XUV pump-probe autocorrelation

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.041403· OSTI ID:21450698

Jiang, Y H; Pfeifer, T; Kurka, M; Kuehnel, K U; Schroeter, C D; Moshammer, R ^[1]; Rudenko, A; Foucar, L ^[2]; Herrwerth, O; Lezius, M; Kling, M F ^[3]; Liu, X; Ueda, K ^[4]; Duesterer, S; Treusch, R ^[5]; Ullrich, J ^[1]

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1. Max-Planck-Institut fuer Kernphysik, D-69117 Heidelberg (Germany)
2. Max-Planck Advanced Study Group at CFEL, D-22607 Hamburg (Germany)
3. Max-Planck-Institut fuer Quantenoptik, D-85748 Garching (Germany)
4. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai (Japan)
5. DESY, D-22607 Hamburg (Germany)

Using a split-mirror stage combined with a reaction microscope, nonlinear autocorrelation traces of XUV pulses from the Free-electron LASer at Hamburg were recorded for N{sub 2} multiphoton-induced fragmentation into noncoincident N{sup 2+} and coincident N{sup 2+}+N{sup 2+} channels. We find a pulse duration of 40{+-}10 fs along with a sharp spike pointing to a coherence time of 4{+-}1 fs, almost twice as short as in previous observations. Both are well reproduced by a simulation based on the partial-coherence model that includes the molecular dynamics leading to an {approx}12-fs substructure in the trace.

• OSTI ID: 21450698
• Journal Information: Physical Review. A, Vol. 82, Issue 4; Other Information: DOI: 10.1103/PhysRevA.82.041403; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
COINCIDENCE SPECTROMETRY
COMPUTERIZED SIMULATION
EXTREME ULTRAVIOLET RADIATION
FREE ELECTRON LASERS
IONIZATION
MOLECULAR DYNAMICS METHOD
MULTI-PHOTON PROCESSES
NITROGEN IONS
NONLINEAR PROBLEMS
PHOTON-MOLECULE COLLISIONS
PULSES
CALCULATION METHODS
CHARGED PARTICLES
COINCIDENCE METHODS
COLLISIONS
COUNTING TECHNIQUES
ELECTROMAGNETIC RADIATION
IONS
LASERS
MOLECULE COLLISIONS
PHOTON COLLISIONS
RADIATIONS
SIMULATION
ULTRAVIOLET RADIATION