Dissociative double ionization of H{sub 2} and D{sub 2}: Comparison between experiment and Monte Carlo wave packet calculations

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.053410· OSTI ID:21408847

Leth, Henriette Astrup; Madsen, Lars Bojer; Moelmer, Klaus ^[1]

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1. Lundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)

Theoretical calculations on dissociative double ionization of H{sub 2} and D{sub 2} in short intense laser pulses using the Monte Carlo wave packet technique are presented for several different field intensities, wavelengths, and pulse durations. We find convincing agreement between theory and experimental results for the kinetic energy release spectra of the nuclei. Besides the correctly predicted spectra the Monte Carlo wave packet method offers insight into the nuclear dynamics during the pulse and makes it possible to address the origin of different structures observed in the spectra. Three-photon resonances in the singly ionized molecule and charge-resonance-enhanced ionization are shown to be the main processes responsible for the observed nuclear energy distributions.

• OSTI ID: 21408847
• Journal Information: Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.053410; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
COMPARATIVE EVALUATIONS
DISTRIBUTION
HYDROGEN
IONIZATION
KINETIC ENERGY
LASERS
MOLECULES
MONTE CARLO METHOD
NUCLEAR ENERGY
NUCLEI
PHOTONS
PULSES
RESONANCE
SPECTRA
WAVE PACKETS
WAVELENGTHS
BOSONS
CALCULATION METHODS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY
EVALUATION
MASSLESS PARTICLES
NONMETALS