MEASUREMENTS OF VARIOUS ISOTOPIC RATIOS AT THE 0.1 PERCENT PERCISION LEVEL WITH A COMPUTER CONTROLLED DIODE LASER SPECTROMETER SYSTEM
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Date
1983
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Publisher
Ohio State University
Abstract
A computer controlled diode laser system has been designed and built which is capable of measuring relative intensities of absorption lines to a high degree of precision in a number of light atmospheric trace gases. Measurements of the relative $^{13}C/^{
Description
12}C$ ratios in a series of $CO_{2}$ sample will be presented. It will be shown that a relative accuracy of 0.1 percent can be obtained with a sample size of about 500 picograms of $^{13}CO_{2}$. The ratio of $^{18}O/^{16}O$ was measured at the same time with comparable accuracy. A discussion of the experimental design and measurement capabilities will be given.
Author Institution: Center for Analytical Chemistry, Laser Analytical Chemistry Group National Bureau of Standards
Author Institution: Center for Analytical Chemistry, Laser Analytical Chemistry Group National Bureau of Standards