Abstract
The concentration of gaseous hydrogen fluoride in air can be measured by the use of a close coincidence between the 3P4−2s2 cascade cw helium neon laser line and the 1R5 hydrogen fluoride absorption line. A nearby cw HeNe laser line (3p2–2s2) is not absorbed by hydrogen fluoride and may be used to compensate for transmission losses in a long-path measurement system. Most of the HFv=0 tov=1 absorption lines lie in a region in which there is strong attenuation caused by atmospheric water vapour, but the 1R5 line is almost free of interference from H2O, CO2 or CO.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Applied Physics B Photophysics and Laser Chemistry
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
