Laser ionization and dissociation of hydrogen

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:7149078

Buck, J D

Experiments undertaken to further characterize the spectroscopic and photophysical properties of some important excited singlet states of molecular hydrogen and its deuterium isotopes are described. Attention was centered on high vibrational levels of the B, C, and B' states within about 1000 cm/sup -1/ of the second dissociation limit. A double-resonance excitation scheme was needed to access levels with a large average bond distance from the ground state. Two-photon absorption of tunable uv-laser radiation-pumped ground-state hydrogen molecules into selected rovibronic levels of the metastable EF double-minimum electronic state. A second tunable near-IR probe laser was scanned to generate ions by resonant multiphoton ionization, where the resonant levels were provided by B, C, B', and other levels near the dissociation limit. New information was obtained regarding line shapes and intensities. Time-of-flight ion mass selection permitted observation of additional excitation channels with dissociation superimposed on the ionization process to produce protons.

• Research Organization: California Univ., Santa Cruz (USA)
• OSTI ID: 7149078
• Country of Publication: United States
• Language: English

Related Subjects

640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
BARYONS
DEUTERIDES
DEUTERIUM
DEUTERIUM COMPOUNDS
DISSOCIATION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FERMIONS
HADRONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN DEUTERIDE
HYDROGEN ISOTOPES
IONIZATION
ISOTOPES
LIGHT NUCLEI
MOLECULES
NONMETALS
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
PRODUCTION
PROTONS
STABLE ISOTOPES
VIBRATIONAL STATES