Details

Autor(en) / Beteiligte

• Kelkensberg, F
• Lefebvre, C
• Siu, W
• Ghafur, O
• Nguyen-Dang, T T
• Atabek, O
• Keller, A
• Serov, V
• Johnsson, P
• Swoboda, M
• Remetter, T
• L'Huillier, A
• Zherebtsov, S
• Sansone, G
• Benedetti, E
• Ferrari, F
• Nisoli, M
• Lépine, F
• Kling, M F
• Vrakking, M J J

Titel

Molecular dissociative ionization and wave-packet dynamics studied using two-color XUV and IR pump-probe spectroscopy

Ist Teil von

• Physical review letters, 2009-09, Vol.103 (12), p.123005-123005, Article 123005

Ort / Verlag

United States

Erscheinungsjahr

2009

Link zum Volltext

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We present a combined theoretical and experimental study of ultrafast wave-packet dynamics in the dissociative ionization of H_{2} molecules as a result of irradiation with an extreme-ultraviolet (XUV) pulse followed by an infrared (IR) pulse. In experiments where the duration of both the XUV and IR pulses are shorter than the vibrational period of H_{2};{+}, dephasing and rephasing of the vibrational wave packet that is formed in H_{2};{+} upon ionization of the neutral molecule by the XUV pulse is observed. In experiments where the duration of the IR pulse exceeds the vibrational period of H_{2};{+} (15 fs), a pronounced dependence of the H;{+} kinetic energy distribution on XUV-IR delay is observed that can be explained in terms of the adiabatic propagation of the H_{2};{+} wave packet on field-dressed potential energy curves.