Effect of gas pressure and pulse length on the isotopically selective multiphoton dissociation of CF3Cl under CO2 laser pulses

1981 ◽  
Vol 25 (3) ◽  
pp. 275-282 ◽  
Author(s):  
M. Nève de Mévergnies
Keyword(s):  
Co2 Laser ◽  
Pulse Length ◽  
Laser Pulses ◽  
Gas Pressure ◽  
Multiphoton Dissociation

scholarly journals Analytical capability of the plasma induced by IR TEA CO2 laser pulses on copper based alloys

2015 ◽  
Vol 80 (12) ◽  
pp. 1505-1513 ◽  
Author(s):  
Milos Momcilovic ◽  
Jovan Ciganovic ◽  
Dragan Rankovic ◽  
Uros Jovanovic ◽  
Milovan Stoiljkovic ◽  
...  
Keyword(s):  
Co2 Laser ◽  
Pulse Length ◽  
Target Surface ◽  
Laser Pulses ◽  
Spectral Lines ◽  
Tea Co2 Laser ◽  
Plasma Spectroscopy ◽  
Plasma Region ◽  
Co2 Laser Radiation ◽  
Good Signal

The applicability of nanosecond infrared (IR) transversely excited atmospheric (TEA) CO2 laser, operating at 10.6 ?m and 100 ns pulse length (initial spike), induced plasma under reduced air pressure for spectrochemical analysis of bronze and brass samples was investigated. The plasma consisted of two clearly distinguished and spatially separated regions and expanded to a distance of about 10 mm from the surface. Elemental composition of the samples was determined using a time-integrated space-resolved laser-induced plasma spectroscopy (TISR-LIPS) technique. Sharp and well resolved spectral lines mostly atomic, and negligibly low background emission, were obtained from a plasma region 7 mm from the target surface. Good signal to background and signal to noise ratios were obtained. Estimated detection limits for trace elements Mg, Fe, Al and Ca were in the order of 10 ppm in bronze and around 50 ppm in brass. Damage on the investigated samples induced by TEA CO2 laser radiation was negligible.

Tritium isotope separation by multiphoton dissociation of CTF3 under CO2‐laser pulses

1982 ◽  
Vol 77 (9) ◽  
pp. 4786-4787 ◽  
Author(s):  
M. Nève de Mévergnies ◽  
F. Verhoeven ◽  
P. del Marmol ◽  
G. Koch
Keyword(s):  
Co2 Laser ◽  
Isotope Separation ◽  
Laser Pulses ◽  
Multiphoton Dissociation

scholarly journals Unique characteristics of long-period fibre gratings fabricated by high-freque ncy CO2 laser pulses

2003 ◽  
Vol 52 (6) ◽  
pp. 1432
Author(s):  
Wang Yi-Ping ◽  
Rao Yun-Jiang ◽  
Ran Zeng-Ling ◽  
Zhu Tao
Keyword(s):  
Co2 Laser ◽  
Laser Pulses ◽  
Long Period
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