Spectroscopic characterization of a titan plasma produced by a continuous-high-power CO2 laser

1993 ◽  
Author(s):  
Angel M. de Frutos Baraja ◽  
Anne Poueyo-Verwaerde ◽  
G. Deshors ◽  
Remy Fabbro ◽  
Jose M. Orza
Keyword(s):  
Co2 Laser ◽  
High Power ◽  
Spectroscopic Characterization

Aerothermic characterization of a high-power fast axial flow CO2 laser

1995 ◽  
Vol 38 (2) ◽  
pp. 207-217 ◽  
Author(s):  
O. Boiron ◽  
G. Le Palec ◽  
Ph. Bournot
Keyword(s):  
Co2 Laser ◽  
High Power ◽  
Axial Flow

AFM-characterization of defects in ultralow absorbing coatings for high-power CO2-laser optics

1993 ◽  
Author(s):  
Manfred R. Berger ◽  
Martina Chmelir ◽  
Herman E. Reedy
Keyword(s):  
Co2 Laser ◽  
High Power ◽  
Laser Optics

Spectroscopic Characterization of Two Different Microwave (2.45 GHz) Induced Argon Plasmas at Atmospheric Pressure

2005 ◽  
Vol 59 (4) ◽  
pp. 519-528 ◽  
Author(s):  
M. C. García ◽  
C. Yubero ◽  
M. D. Calzada ◽  
M. P. Martínez-Jiménez
Keyword(s):  
Surface Wave ◽  
High Power ◽  
Atmospheric Pressure ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Optical Emission ◽  
Spectroscopic Characterization ◽  
Argon Plasmas ◽  
Sustained Discharge

A surface-wave-sustained discharge created by using a surfatron device in a tube open to the atmosphere can be used to maintain a microwave (2.45 GHz) plasma at atmospheric pressure at powers of less than 300 W. The TIA ( Torche à Injection Axiale) is a device also producing a plasma that, moreover, permits us to work at high power (higher than 200 W and up to 1000 W). A study of the departure from the thermodynamic equilibrium existing in the argon plasmas created by both devices has been done by using optical emission spectroscopy techniques in order to characterize them and to evaluate their possible advantages when they are used for applied purposes.

scholarly journals Raman Spectroscopic Characterization of RP-18-Type Chemically Bonded Stationary Phases for Liquid Chromatography

1999 ◽  
Vol 82 (2) ◽  
pp. 297-304 ◽  
Author(s):  
Gabriela Kowalik ◽  
Krystyna Rogosz ◽  
Teresa Kowalska
Keyword(s):  
Raman Spectra ◽  
High Power ◽  
Stationary Phases ◽  
Spectroscopic Characterization ◽  
Reversed Phase ◽  
Neodymium Laser ◽  
Raman Spectroscopic ◽  
Bonded Stationary Phases ◽  
Laser Raman Spectra

Abstract This study is the first Raman spectroscopic characterization of conventional chemically bonded liquid chromatographic (LC) stationary phases of the RP-18 type using the high-power Nd:WV04 neodymium laser. Raman spectra were obtained for octadecyl (C18) chemically bonded silica-based stationary phases, as well as for silica, aminopropyl (NH2), cyanopropyl (CN), diol (OH), octyl (C8), and methyl (C1) phases for comparison. This study demonstrates that Raman spectroscopy using the high-power neodymium laser can be used to study RP-18-type LC stationary phases and to quantitate the density of coverage of the silica matrix with octadecyl ligands. The paper presents the experimental setup and conditions usedto obtain Raman spectra of commercial RP-18-type chemically bonded stationary phases and examines the spectroscopic similarities and differences observed for different bonded ligands typically used in reversed-phase and normal-phase LC separations.

Spectroscopic Characterization of Bacteriorhodopsin's L-intermediate in 3D Crystals Cooled to 170 K¶

2001 ◽  
Vol 74 (6) ◽  
pp. 794 ◽  
Author(s):  
Antoine Royant ◽  
Karl Edman ◽  
Thomas Ursby ◽  
Eva Pebay-Peyroula ◽  
Ehud. M. Landau ◽  
...  
Keyword(s):  
Spectroscopic Characterization

Characterization of keyhole plasma in 20 kW-class CO2 laser welding

1999 ◽  
Author(s):  
Jay F. Tu ◽  
Isamu Miyamoto ◽  
Takashi Inoue ◽  
Etsuji Ohmura ◽  
Kazuhiko Ono ◽  
...  
Keyword(s):  
Laser Welding ◽  
Co2 Laser
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