4.6 Article

Investigating two-photon double ionization of D2 by XUV-pump-XUV-probe experiments

Journal

PHYSICAL REVIEW A
Volume 81, Issue 5, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.81.051402

Keywords

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Funding

  1. DFG [JI 110/2-2]
  2. MICINN [FIS2007-60064]
  3. NSF [PHY-0652519]
  4. Division Of Physics
  5. Direct For Mathematical & Physical Scien [0969299, GRANTS:14052687] Funding Source: National Science Foundation

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We used a split-mirror setup attached to a reaction microscope at the free-electron laser in Hamburg (FLASH) to perform an XUV-pump-XUV-probe experiment by tracing the ultrafast nuclear wave-packet motion in the D-2(+)(1s sigma(g)) with 10 fs time resolution. Comparison with time-dependent calculations shows excellent agreement with the measured vibrational period of 22 +/- 4 fs in D-2(+), points to the importance of accurately knowing the internuclear distance-dependent ionization probability, and paves the way to control sequential and nonsequential two-photon double-ionization contributions.

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