Measurements of ratios of stable isotopes are used in such diverse fields as petroleum prospecting, medical diagnostics, and planetary exploration. The narrow emission linewidth available from tunable diode lasers permits high-resolution infrared absorption measurements of closely spaced isotopic rovibrational lines. Our dual beam spectrometer uses the sweep integration technique in a spectral region where adjacent spectral lines are of approximately equal absorbance at the expected isotopic abundances. The experimental results reported here indicate that isotopic ratios of carbon in carbon dioxide can be measured to an accuracy of better than 0.4%. This laser spectroscopic spectrometric technique offers an alternative to the mass technique...
The 2300 cm(exp -1) spectral region is especially interesting because (12)CO2 and (13)CO2 bands over...
A compact and portable diode-laser spectrometer is developed for high-precision measurements of the ...
A compact and portable diode-laser spectrometer is developed for high-precision measurements of the ...
Measurements of ratios of stable isotopes are used in such diverse fields as petroleum prospecting, ...
Near-infrared laser spectroscopy is used to measure the 13C/12C isotope abundance ratio in gas phase...
Near-infrared laser spectroscopy is used to measure the C-13/C-12 isotope abundance ratio in gas pha...
ABSTRACT: A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during...
A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during a tracer ...
0946-2171The measurement of relative intensities in CO2 combination bands spectrum is performed usin...
As a first step in successfully measuring carbon isotopes optically we have previously demonstrated ...
International audienceCorrelations between a sample and a sealed reference cell of a tunable diode l...
International audienceCorrelations between a sample and a sealed reference cell of a tunable diode l...
International audienceCorrelations between a sample and a sealed reference cell of a tunable diode l...
International audienceCorrelations between a sample and a sealed reference cell of a tunable diode l...
0946-2171The measurement of relative intensities in CO2 combination bands spectrum is performed usin...
The 2300 cm(exp -1) spectral region is especially interesting because (12)CO2 and (13)CO2 bands over...
A compact and portable diode-laser spectrometer is developed for high-precision measurements of the ...
A compact and portable diode-laser spectrometer is developed for high-precision measurements of the ...
Measurements of ratios of stable isotopes are used in such diverse fields as petroleum prospecting, ...
Near-infrared laser spectroscopy is used to measure the 13C/12C isotope abundance ratio in gas phase...
Near-infrared laser spectroscopy is used to measure the C-13/C-12 isotope abundance ratio in gas pha...
ABSTRACT: A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during...
A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during a tracer ...
0946-2171The measurement of relative intensities in CO2 combination bands spectrum is performed usin...
As a first step in successfully measuring carbon isotopes optically we have previously demonstrated ...
International audienceCorrelations between a sample and a sealed reference cell of a tunable diode l...
International audienceCorrelations between a sample and a sealed reference cell of a tunable diode l...
International audienceCorrelations between a sample and a sealed reference cell of a tunable diode l...
International audienceCorrelations between a sample and a sealed reference cell of a tunable diode l...
0946-2171The measurement of relative intensities in CO2 combination bands spectrum is performed usin...
The 2300 cm(exp -1) spectral region is especially interesting because (12)CO2 and (13)CO2 bands over...
A compact and portable diode-laser spectrometer is developed for high-precision measurements of the ...
A compact and portable diode-laser spectrometer is developed for high-precision measurements of the ...