TY - JOUR
KW - Deposition
KW - Target
KW - Emission
KW - Power
KW - Evaporation
KW - Material
KW - Thin films
KW - Ablation
KW - Laser
KW - Laser ablation
KW - Laser ablation
KW - Superconducting
KW - Vaporization
KW - Intensities
KW - Intensity
KW - High-tc
KW - Oxide
KW - Time
KW - Ca
KW - Composition
KW - Element
KW - Mass
KW - Sampling
KW - Spectrometry
KW - Constant
KW - Cu
KW - Ratio
KW - Vapor
KW - Crater
KW - Mechanism
KW - Icp-aes
KW - Elements
KW - Emission spectrometry
KW - Emission spectrometry
KW - Ratios
KW - Inductively coupled plasma atomic emission spectrometry
KW - Picosecond
KW - Ablated material
KW - Array
KW - Bi
KW - Bi-sr-ca-cu-o
KW - Cuo
KW - Density
KW - Droplet
KW - Droplets
KW - High-temperature superconductors
KW - Laser ablation deposition
KW - Laser sampling
KW - Nanosecond
KW - Oxides
KW - Phase
KW - Pulsed laser
KW - Pulsed laser
KW - Sem
KW - Sr
KW - Steady state
KW - Targets
KW - Thermal
KW - Thermal vaporization
AU - Wing-Tat Chan
AU - Xianglei Mao
AU - Richard E Russo
AB - <p>Nanosecond and picosecond pulsed laser ablated materials from Bi-Sr-Ca-Cu-O superconducting targets are monitored by inductively coupled plasma-atomic emission spectrometry with a photodiode array detector. Differential vaporization was observed; elements of the lower-melting-point oxides (Bi<sub>2</sub>O<sub>3</sub> and CuO) are enriched in the vapor phase, indicating a thermal vaporization mechanism. Melted droplets observed with SEM and enriched Ca and Sr content in the ablation crater measured with EDX support the hypothesis. A steady-state mass ablation composition after prolonged laser sampling is also observed; the ratios of intensity for Bi, Ca, and Sr to Cu are constant for power density 0.1 to 3.0 GW/cm<sup>2</sup></p>
AD - <p>LAWRENCE BERKELEY LAB,M-S 90-2024,BERKELEY,CA 94720</p>
BT - Applied Spectroscopy
C2 - LBNL-31914
IS - 6
LA - eng
LB - Laser
N1 - <p>LBNL-31914 NOT IN FILE</p>
N2 - <p>Nanosecond and picosecond pulsed laser ablated materials from Bi-Sr-Ca-Cu-O superconducting targets are monitored by inductively coupled plasma-atomic emission spectrometry with a photodiode array detector. Differential vaporization was observed; elements of the lower-melting-point oxides (Bi<sub>2</sub>O<sub>3</sub> and CuO) are enriched in the vapor phase, indicating a thermal vaporization mechanism. Melted droplets observed with SEM and enriched Ca and Sr content in the ablation crater measured with EDX support the hypothesis. A steady-state mass ablation composition after prolonged laser sampling is also observed; the ratios of intensity for Bi, Ca, and Sr to Cu are constant for power density 0.1 to 3.0 GW/cm<sup>2</sup></p>
PY - 1992
SP - 1025
EP - 1031
T2 - Applied Spectroscopy
TI - Differential Vaporization During Laser Ablation Deposition of Bi-Sr-Ca-Cu-O Superconducting Materials
UR - http://www.opticsinfobase.org/as/abstract.cfm?URI=as-46-6-1025
VL - 46
ER -