Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
63 (1993), S. 2490-2492
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We have measured the axial (z) and radial (x) distribution of the vacuum ultraviolet emission from excimer laser generated aluminum plasmas in vacuum and in 300 mTorr of argon. The ratio of the radiated line intensities (emission in a gas versus vacuum) on the z axis (i.e., x=0) increased exponentially with distance from the target surface for plasmas generated in a 300 mTorr argon ambient. The absolute line intensities increased linearly with the argon pressure and approximately linearly with the ambient gas atomic cross section when other rare gases were substituted. The line intensity radial distribution was broader for plasmas in argon than in vacuum and the magnitude of the effect increased monotonically with z. The spectral data obtained from plasmas in a gas ambient are discussed in terms of the diffusion of plasma electrons in an ionized gas.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.110458
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