ELECTROSTATIC-PROBE AND OPTICAL SPECTROSCOPY STUDIES OF LOW-TEMPERATURE LASER-PRODUCED PLASMAS

Authors
HENDRON JM ALWAZZAN RA MAHONY C MORROW T GRAHAM WG
Citation
Jm. Hendron et al., ELECTROSTATIC-PROBE AND OPTICAL SPECTROSCOPY STUDIES OF LOW-TEMPERATURE LASER-PRODUCED PLASMAS, Applied surface science, 96-8, 1996, pp. 112-116
Citations number
8
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical","Materials Science, Coatings & Films
Journal title
Applied surface science → ACNP
ISSN journal
01694332
Volume
96-8
Year of publication
1996
Pages
112 - 116
Database
ISI
SICI code
0169-4332(1996)96-8:<112:EAOSSO>2.0.ZU;2-W
Abstract
Electrostatic probe and optical spectroscopy techniques were used to i nvestigate ion number densities, ion velocities and ion/neutral ratios of laser-produced YBCO plasmas in vacuum and in ambient oxygen. Under appropriate experimental conditions both techniques have been observe d to yield consistent values for local ion number densities and veloci ties in a vacuum environment. Due to confinement of the plume in oxyge n ion/neutral ratios were observed to decrease from similar to 10 in v acuum to similar to 5 in 60 mTorr of oxygen, at 1.5 cm from the target and 1 mu s delay time.