Xenon excited state density measurements in electron beam pumped XeCl laser mixtures

Journal Article · Mon Dec 14 00:00:00 EST 1987 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.98319· OSTI ID:5843800

Kannari, F; Kimura, W D; Seamans, J F; Guyer, D R

Time-dependent density measurements of the lowest xenon excited states (5p/sup 5/6s) in electron beam (e-beam) pumped XeCl laser mixtures (nonlasing) are performed using pulsed hook interferometry. The e-beam pulse length is approx. =0.45 ..mu..s (full width at half-maximum) with an average excitation rate of approx. =250 kW/cm/sup 3/. Density differences (..delta..N*) of transitions at 823.2 nm (6s(3/2)/sup 0//sub 2/ --6p(3/2)/sub 2/), 828.0 nm (6s(3/2)/sup 0//sub 1/ --6p(1/2)/sub 0/), and 840.9 nm (6s(3/2)/sup 0//sub 2/ --6p(3/2)/sub 1/) are obtained for various HCl and Xe concentrations. For a 98.3% Ne/1.5% Xe/0.16% HCl mixture at 3000 Torr, ..delta..N* (823.2 nm) and ..delta..N*(828.0 nm) are relatively constant at approx. =3 x 10/sup 14/ and approx. =1.7 x 10/sup 14/ cm/sup -3/, respectively. At lower initial HCl concentrations, the ..delta..N*(823.2 nm) density starts out similar to the 0.16% HCl case, but tends to increase dramatically during the e-beam pulse. For a 0.04% HCl mixture, a ..delta..N*(840.9 nm) density of approx. =4.5 x 10/sup 15/ cm/sup -3/ is measured at the end of the e-beam pulse. Preliminary comparisons of the data with a computer model show good agreement for HCl concentrations greater than or equal to0.16%, but disagreements at leaner concentrations.

• Research Organization: Spectra Technology, Inc., 2755 Northup Way, Bellevue, Washington 98004-1495
• OSTI ID: 5843800
• Journal Information: Appl. Phys. Lett.; (United States), Vol. 51:24
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
74 ATOMIC AND MOLECULAR PHYSICS
EXCIMER LASERS
ELECTRON BEAM PUMPING
XENON
ELECTRON-ATOM COLLISIONS
METASTABLE STATES
XENON CHLORIDES
ELECTRON-MOLECULE COLLISIONS
EXCITED STATES
HYDROCHLORIC ACID
ATOM COLLISIONS
CHLORIDES
CHLORINE COMPOUNDS
COLLISIONS
ELECTRICAL PUMPING
ELECTRON COLLISIONS
ELEMENTS
ENERGY LEVELS
FLUIDS
GAS LASERS
GASES
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LASERS
MOLECULE COLLISIONS
NONMETALS
PUMPING
RARE GAS COMPOUNDS
RARE GASES
XENON COMPOUNDS
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640304 - Atomic
Molecular & Chemical Physics- Collision Phenomena