Softening of the H sub 2 sup + molecular bond in intense laser fields

We report a new kind of multiphoton dissociation in intense laser fields. H{sub 2}{sup +} molecular ions were formed in above-threshold ionization of H{sub 2} gas by intense 532-nm, 100-ps laser pulses. Observations suggest that multiphoton couplings soften the molecular bond, resulting in dissociat...

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Bibliographic Details
Published in:Physical review letters 1990-04, Vol.64:16
Main Authors: Bucksbaum, P.H., Zavriyev, A., Muller, H.G., Schumacher, D.W.
Format: Article
Language:English
Subjects:
AMPLITUDES
ANGULAR DISTRIBUTION
ATOMIC AND MOLECULAR PHYSICS
CATIONS
CHARGED PARTICLES
DATA
DISSOCIATION
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROGEN
HYDROGEN IONS
INFORMATION
INTERATOMIC FORCES
IONS
LASER RADIATION
MOLECULAR IONS
MULTI-PHOTON PROCESSES
NONMETALS
NUMERICAL DATA
PHOTOELECTRON SPECTROSCOPY
PULSES
RADIATIONS
SPECTRA
SPECTROSCOPY 640302 > Atomic, Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
THRESHOLD ENERGY
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Summary:We report a new kind of multiphoton dissociation in intense laser fields. H{sub 2}{sup +} molecular ions were formed in above-threshold ionization of H{sub 2} gas by intense 532-nm, 100-ps laser pulses. Observations suggest that multiphoton couplings soften the molecular bond, resulting in dissociation at laser intensities over 50 TW/cm{sup 2}. The ion-dissociation spectra have multiple peaks caused by multiphoton transitions during dissociation of H{sub 2}{sup +}.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.64.1883