Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses
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Momčilović, MilošKuzmanović, Miroslav M.
Ranković, Dragan
Ciganović, Jovan
Stoiljković, Milovan
Savović, Jelena
Trtica, Milan
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Spatially resolved, time-integrated optical emission spectroscopy was applied for investigation of copper plasma produced by a nanosecond infrared (IR) transversely excited atmospheric (TEA) CO2 laser, operating at 10.6 gm. The effect of surrounding air pressure, in the pressure range 0.1 to 1013 mbar, on plasma formation and its characteristics was investigated. A linear dependence of intensity threshold for plasma formation on logarithm of air pressure was found. Lowering of the air pressure reduces the extent of gas breakdown, enabling better laser-target coupling and thus increases ablation. Optimum air pressure for target plasma formation was 0.1 mbar. Under that pressure, the induced plasma consisted of two clearly distinguished and spatially separated regions. The maximum intensity of emission, with sharp and well-resolved spectral lines and negligibly low background emission, was obtained from a plasma zone 8 mm from the target surface. The estimated excitation temperature in t...his zone was around 7000 K. The favorable signal to background ratio obtained in this plasma region indicates possible analytical application of TEA CO2 laser produced copper plasma. Detection limits of trace elements present in the Cu sample were on the order of 10 ppm (parts per million). Time-resolved measurements of spatially selected plasma zones were used to find a correlation between the observed spatial position and time delay.
Keywords:
Laser induced Cu-plasma emission / Shock wave plasma / Copper target / Transversely excited atmospheric CO2 laser / TEA CO2 laserSource:
Applied Spectroscopy, 2015, 69, 4, 419-429Funding / projects:
- Effects of laser radiation and plasma on novel materials in their synthesis, modification, and analysis (RS-172019)
- European Scientific Foundation
DOI: 10.1366/14-07584
ISSN: 0003-7028; 1943-3530
PubMed: 25741748
WoS: 000363083500001
Scopus: 2-s2.0-84929073870
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VinčaTY - JOUR AU - Momčilović, Miloš AU - Kuzmanović, Miroslav M. AU - Ranković, Dragan AU - Ciganović, Jovan AU - Stoiljković, Milovan AU - Savović, Jelena AU - Trtica, Milan PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/779 AB - Spatially resolved, time-integrated optical emission spectroscopy was applied for investigation of copper plasma produced by a nanosecond infrared (IR) transversely excited atmospheric (TEA) CO2 laser, operating at 10.6 gm. The effect of surrounding air pressure, in the pressure range 0.1 to 1013 mbar, on plasma formation and its characteristics was investigated. A linear dependence of intensity threshold for plasma formation on logarithm of air pressure was found. Lowering of the air pressure reduces the extent of gas breakdown, enabling better laser-target coupling and thus increases ablation. Optimum air pressure for target plasma formation was 0.1 mbar. Under that pressure, the induced plasma consisted of two clearly distinguished and spatially separated regions. The maximum intensity of emission, with sharp and well-resolved spectral lines and negligibly low background emission, was obtained from a plasma zone 8 mm from the target surface. The estimated excitation temperature in this zone was around 7000 K. The favorable signal to background ratio obtained in this plasma region indicates possible analytical application of TEA CO2 laser produced copper plasma. Detection limits of trace elements present in the Cu sample were on the order of 10 ppm (parts per million). Time-resolved measurements of spatially selected plasma zones were used to find a correlation between the observed spatial position and time delay. T2 - Applied Spectroscopy T1 - Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses VL - 69 IS - 4 SP - 419 EP - 429 DO - 10.1366/14-07584 ER -
@article{ author = "Momčilović, Miloš and Kuzmanović, Miroslav M. and Ranković, Dragan and Ciganović, Jovan and Stoiljković, Milovan and Savović, Jelena and Trtica, Milan", year = "2015", abstract = "Spatially resolved, time-integrated optical emission spectroscopy was applied for investigation of copper plasma produced by a nanosecond infrared (IR) transversely excited atmospheric (TEA) CO2 laser, operating at 10.6 gm. The effect of surrounding air pressure, in the pressure range 0.1 to 1013 mbar, on plasma formation and its characteristics was investigated. A linear dependence of intensity threshold for plasma formation on logarithm of air pressure was found. Lowering of the air pressure reduces the extent of gas breakdown, enabling better laser-target coupling and thus increases ablation. Optimum air pressure for target plasma formation was 0.1 mbar. Under that pressure, the induced plasma consisted of two clearly distinguished and spatially separated regions. The maximum intensity of emission, with sharp and well-resolved spectral lines and negligibly low background emission, was obtained from a plasma zone 8 mm from the target surface. The estimated excitation temperature in this zone was around 7000 K. The favorable signal to background ratio obtained in this plasma region indicates possible analytical application of TEA CO2 laser produced copper plasma. Detection limits of trace elements present in the Cu sample were on the order of 10 ppm (parts per million). Time-resolved measurements of spatially selected plasma zones were used to find a correlation between the observed spatial position and time delay.", journal = "Applied Spectroscopy", title = "Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses", volume = "69", number = "4", pages = "419-429", doi = "10.1366/14-07584" }
Momčilović, M., Kuzmanović, M. M., Ranković, D., Ciganović, J., Stoiljković, M., Savović, J.,& Trtica, M.. (2015). Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses. in Applied Spectroscopy, 69(4), 419-429. https://doi.org/10.1366/14-07584
Momčilović M, Kuzmanović MM, Ranković D, Ciganović J, Stoiljković M, Savović J, Trtica M. Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses. in Applied Spectroscopy. 2015;69(4):419-429. doi:10.1366/14-07584 .
Momčilović, Miloš, Kuzmanović, Miroslav M., Ranković, Dragan, Ciganović, Jovan, Stoiljković, Milovan, Savović, Jelena, Trtica, Milan, "Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses" in Applied Spectroscopy, 69, no. 4 (2015):419-429, https://doi.org/10.1366/14-07584 . .