Abstract
The narrow linewidth Vertical External Cavity Surface Emitting Laser (VECSEL) was used to record the high-resolution ammonia spectra in the 2.3 μm atmospheric transparency window at temperatures from 160 to 296 K. In the 4275-4356 cm−1 (∼ 2295-2339 nm) range 807 transitions were identified as belonging to the 14NH3, extending our previous room temperature study of 340 transitions. The temperature dependence of line absorbance was used to retrieve the lower state energy for 682 transitions. By comparing the variationally computed line list and exploiting the lower state combination differences relations, the quantum assignment was proposed for 703 lines representing over 99.9% of integrated 14NH3 absorption in the range. These transitions reached 611 different upper state levels belonging to 23 vibrational bands. For 340 of them, their experimental energy value was retrieved for the first time. The comparison of our line list to the HITRAN2016 and HITRAN2020 is presented and discussed.
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: Journal of Quantitative Spectroscopy and Radiative Transfer
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.
