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/

Journal Article · Mon Jul 04 00:00:00 EDT 1988 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.100573· OSTI ID:7006857

Auciello, O; Athavale, S; Hankins, O E; Sito, M; Schreiner, A F; Biunno, N

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), Vol. 53:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
ABLATION
LASER-PRODUCED PLASMA
COPPER OXIDES
EMISSION SPECTROSCOPY
YTTRIUM OXIDES
EXCIMER LASERS
IONIZATION
PEROVSKITES
PLASMA
PLASMA DIAGNOSTICS
XENON CHLORIDES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
COPPER COMPOUNDS
GAS LASERS
HALIDES
HALOGEN COMPOUNDS
LASERS
OXIDES
OXYGEN COMPOUNDS
RARE GAS COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
XENON COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties