Optical processes in xenon: multiphoton ionization and ultraviolet photodissociation of the dimer ion

Thesis/Dissertation · Sat Jan 01 00:00:00 EST 1983

OSTI ID:5122361

McCown, A W

The coefficient for two-photon ionization of xenon at 193 nm has been measured using a microwave absorption scheme which determines peak electron densities. The electron-neutral collision frequency, nu/sub m/, has been obtained using a microwave bridge and the result is consistent with 0.7 eV electrons. It is found that when an ArF and an XeF excimer laser are fired simultaneously, the electron density is enhanced by at least an order of magnitude due to a near resonance with the Xe 6p(1/2)/sub 0/ level. The strong excitation of this state has allowed the measurement of its radiative lifetime and self quenching rate constant. Under high pressure conditions, the dimer ion (Xe/sub 2//sup +/) quickly forms from the atomic ion, and photodissociation on the 1(1/2)/sub u/ ..-->.. 2(1/2)/sub g/ band has been observed after sequential UV pumping. Finally, the role of Xe/sub 2//sup +/ in the formation of the excimers XeCl and Xe/sub 2/Cl has been examined.

• Research Organization: Illinois Univ., Urbana (USA)
• OSTI ID: 5122361
• Resource Relation: Other Information: Thesis (Ph.D.)
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
XENON
ELECTRON DENSITY
DIMERS
DISSOCIATION
EXCITATION
IONIZATION
LASERS
LIFETIME
MOLECULAR IONS
MULTI-PHOTON PROCESSES
ULTRAVIOLET RADIATION
XENON CHLORIDES
CHARGED PARTICLES
CHLORIDES
CHLORINE COMPOUNDS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
FLUIDS
GASES
HALIDES
HALOGEN COMPOUNDS
IONS
NONMETALS
RADIATIONS
RARE GAS COMPOUNDS
RARE GASES
XENON COMPOUNDS
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory