Cavity Ringdown Spectroscopy of PH2 Radical in 465-555 nm
光腔衰荡光谱研究PH2自由基在465-555nm的光谱作者机构：中国科学技术大学合肥微尺度物质科学国家实验室 化学物理系合肥230026
出 版 物：《Chinese Journal of Chemical Physics》 (化学物理学报（英文）)
年 卷 期：2011年第24卷第1期
页 面：8-15,I0003页
核心收录：
学科分类：07[理学]
基 金：This work was supported by the National Natural Science Foundation of China (No.20673107) the National Key Basic Research Special Foundation of China (No.2007CB815203) and the Chinese Academy of Sciences (No.KJCX2-SW-H08)
主 题：PH2 radical DC discharge Cavity ringdown spectroscopy
摘 要：Absorption spectra of jet-cooled PH2 radicals were recorded in the wavelength range of 465- 555 nm using cavity ringdown spectroscopy. The PH2 radicals were produced in a supersonic jet by pulsed direct current discharge of a mixture of PHa and SF6 in argon. Seven vibronic bands with fine rotational structures have been observed and assigned as 0 0^, 2 0^n, and 2 1^n （n=1- 3） bands of the A^2A1- X~ 2B1 electronic transition. Rotational assignments and rotational term values for each band were re-identified, and the molecular parameters including rotational constants, centrifugal distortion constants, and spin-rotation interaction constants were also improved with reasonably high precision. In addition, large perturbations observed in each quantum number of total angular momentum of the a axis level of the excited vibronic states were briefly discussed.
维普期刊数据库