Proton production in one- and two-color laser ionization and dissociation of molecular hydrogen

Journal Article · Thu Jun 30 04:00:00 EDT 1988 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100324a004· OSTI ID:6478909

Buck, J D; Parker, D H; Chandler, D W

Production pathways for H/sup +/ following multiphoton excitation of H/sub 2/ are explored by using the E,F excited electronic state as a two-photon-resonant intermediate level. In one-laser experiments H/sup +/ is formed by dissociation of the neutral molecule rather than by dissociation of the H/sub 2//sup +/ ion. By use of time-delayed double-resonance laser ionization, three distinct processes for H/sup +/ formation are identified. In each case the observed threshold for dissociation from the chosen resonant level lies surprisingly close to an asymptotic (R/sub H(1s)+H*/ ..-->.. infinity) limit.

• Research Organization: Univ. of California, Santa Cruz (USA)
• OSTI ID: 6478909
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 92:13; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
BRANCHING RATIO
CATIONS
CHARGED PARTICLES
CHEMICAL REACTION YIELD
DISSOCIATION
DYE LASERS
ELEMENTS
HYDROGEN
HYDROGEN COMPOUNDS
IONIZATION
IONS
LASERS
LIQUID LASERS
MULTI-PHOTON PROCESSES
NEODYMIUM LASERS
NONMETALS
PHOTOIONIZATION
POTENTIALS
SOLID STATE LASERS
YIELDS