Ionization and dissociation of H sub 2 in intense laser fields at 1. 064. mu. m, 532 nm, and 355 nm

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Physical Review, A; (USA)

DOI:https://doi.org/10.1103/PhysRevA.42.5500· OSTI ID:5829676

Zavriyev, A; Bucksbaum, P H; Muller, H G; Schumacher, D W ^[1]

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1. AT T Bell Laboratories, Murray Hill, NJ (USA)

We present a systematic experimental study of the dissociation and ionization of molecular hydrogen in intense laser fields at three different wavelengths: 1.064 {mu}m, 532 nm, and 355 nm. The light intensity ranges from 10{sup 13} W/cm{sup 2} to 10{sup 15} W/cm{sup 2}. Measurements include electron spectra and angular distributions, kinetic-energy spectra and angular distributions of ion fragments, and ion dissociation fractions. We report a number of interesting and novel phenomena, including the following: above-threshold ionization to various vibrational states in the molecular ion, production of very-high-energy electrons from ionization at 1.064 {mu}m, enhanced dissociation of the H{sub 2}{sup +} molecular ion via the mechanism of bond softening, above-threshold dissociation, and evidence for the alignment of the molecule in a high-intensity laser field.

• OSTI ID: 5829676
• Journal Information: Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 42:9; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
COLLISIONS
DISSOCIATION
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELECTRON SPECTRA
ELEMENTS
ENERGY
HARMONICS
HYDROGEN
INFRARED RADIATION
IONIZATION
LASER RADIATION
MOLECULE COLLISIONS
NONMETALS
OSCILLATIONS
PHOTOIONIZATION
PHOTON COLLISIONS
PHOTON-MOLECULE COLLISIONS
RADIATIONS
SPECTRA
THRESHOLD ENERGY