Spectroscopic analysis of electronically excited species in XeCl excimer laser-induced plasmas from the ablated high-temperature superconductor YBa/sub 2/Cu/sub 3/O/sub 7/
Optical spectroscopic analyses have been performed to study luminescence from plasmas produced by ablation of YBa/sub 2/Cu/sub 3/O/sub 7/ single-phase high T/sub c/ bulk superconductors exposed to XeCl excimer laser (308 nm) pulses. Only excited atomic neutral and single ionized species (CuCu/sup +/, BaBa/sup +/, YY/sup +/) were observed within the experimental resolution of an optical multichannel analyzer detection system, when irradiating the targets in vacuum (approx.10/sup -5/--10/sup -4/ Torr). Conspicuously absent in the spectra (300--800 nm range) are molecular emission bands that would appear if large excited molecules or fragments were present. Implications of the present results are discussed which relate to an early hypothesis about the laser ablation mechanism and their influence on high T/sub c/ film characteristics.
- Research Organization:
- North Carolina State University, Raleigh, North Carolina 27695-7909
- OSTI ID:
- 7006857
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 53:1; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABLATION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
COPPER COMPOUNDS
COPPER OXIDES
EMISSION SPECTROSCOPY
EXCIMER LASERS
GAS LASERS
HALIDES
HALOGEN COMPOUNDS
IONIZATION
LASER-PRODUCED PLASMA
LASERS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PLASMA
PLASMA DIAGNOSTICS
RARE GAS COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
XENON CHLORIDES
XENON COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES