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Study on the Rotational Spectra of the Weak Band(2,3)in the Comet-tail System(A2Π-X2Σ+)of CO+ Using Velocity-Modulation Laser Spectroscopy
Yang Xiaohua, Chen Yang, Cai Peipei, Wang Rongjun, Lu Jingjing
Department of Physics,East China Normal University,Laboratory for Quantum Optics,East China Normal University,Shanghai 200062
Abstract:
Using differential velocity-modulation spectroscopic technique,the Doppler-limited rotational absorption spectra of the weak band(2,3)in the Comet-tail system(A2Π-X2Σ+) of CO+ were measured.The assignment was made for all the observed spectra.Furthermore the effective molecular constants of the states involved in the transition were obtained,and the constants of the lowerstate v"=3 were reported for first time as to our knowledge.The absorption sensitivity of the experimental sytem was measured to be 1.56×10-6 under the 1slock-in amplifier integration time.
Key words:  Velocity-modulation,CO+,Molecular constant
FundProject:国家自然科学基金(批准号:19974011)和波谱与原子分子物理国家重点实验室(批准号:991516)资助课题。
CO+彗尾带系(A2Π-X2Σ+)(2,3)带速度调制激光光谱研究
杨晓华, 陈扬, 蔡佩佩, 王荣军, 卢晶晶
华东师范大学物理系,国家教育部华东师范大学量子光学开放实验室,上海,200062
摘要:
利用差分速度调制分子离子激光光谱技术,首次测量了CO+彗尾带系(A2Π-X2Σ+)(2,3)弱带转动吸收光谱,通过对测量谱线的标识,获得了两态的分子常数,其中下态v"=3的常数未见有文献报导。在锁相放大器1s积分时间下,实验系统的吸收测量灵敏度实测为1.56×10-6。
关键词:  速度调制;CO+  分子常数
DOI:10.1088/1674-0068/13/4/406-412
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