Carbon isotope analysis device and carbon isotope analysis method

Abstract

A carbon isotope analyzerincludes a carbon dioxide isotope generatorthat includes a combustion unit that generates gas containing carbon dioxide isotope from carbon isotope, and a carbon dioxide isotope purifying unit; a spectrometerincluding an optical resonatorhaving a pair of mirrors, and a photodetectorthat determines the intensity of light transmitted from the optical resonator; and a light generatorincluding a light source, a first optical fiberto transmit a light beam from the light source, a second optical fiberfor wavelength conversion, the second optical fibersplitting from the first optical fiberat a point and combining with the first optical fiberat another point downstream of the splitting point, and a non-linear optical crystalthat generates light having the absorption wavelength of the carbon dioxide isotope on the basis of the difference in frequency between light beams transmitted through the optical crystal. The carbon isotope analyzeris a simple and convenient apparatus that can analyze isotopeC.