High Precision Cavity Ring Down Spectroscopy of 6υ3 Overtone Band of 14N2 16O near 775 nm  

一氧化二氮分子位于775 nm的6υ3振动泛频跃迁的高精密光腔衰荡光谱

作　　者：赵小琴 王进[1] 刘安雯[1] 周泽义[2] 胡水明[1] 

机构地区：[1]中国科学技术大学,合肥微尺度物质与科学国家实验室(筹),合肥230026 [2]中国计量院,北京100013

出　　处：《Chinese Journal of Chemical Physics》2017年第5期487-492,I0001,共7页化学物理学报（英文）

基　　金：This work was supported by the National Key Basic Research Program of China （2013CB834602 and 2013BAK12B02）, and the National Natural Science Foundation of China （No.21473172, No.21411130183, No.21303176）.

摘　　要：Transitions of the 6υ3 overtone band of ^14N2 ^16O near 775 nm have been studied by continuous-wave cavity ring-down spectroscopy. Line positions and intensities were derived from a fit of the line shape using a hard-collisional profile. The line positions determined with absolute accuracy of 5×10^-4 cm^-1 allowed us to reveal finer ro-vibrational couplings taking place after J〉14 except a strong anharmonic interaction identified by the effective Hamiltonian model. The absolute line intensities have also been retrieved with an estimated accuracy of 2% for a majority of the unblended lines. A new set of ro-vibrational and dipole moment parameters were derived from the experimental values. A comparison between the line positions and intensities of the 6υ3 band obtained in this work and those from previous studies is given.

关 键 词：Nitrous oxide  Cavity ring-down spectroscopy  Vibration-rotation spectroscopy 

分 类 号：O[理学]