Theoretical prediction on the R-branch lines for the first overtone transitions in the ground electronic state of 12C16O
Zhixiang Fan,
Chunrun Luo,
Qunchao Fan,
Haide Ma,
Jia Fu,
Jie Ma,
Yonggen Xu,
Huidong Li,
Yi Zhang
Affiliations
Zhixiang Fan
School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
Chunrun Luo
School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
Qunchao Fan
School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
Haide Ma
School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
Jia Fu
School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
Jie Ma
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Laser Spectroscopy Laboratory, College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China
Yonggen Xu
School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
Huidong Li
School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
Yi Zhang
College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
An analytical formula for the diatomic R-branch emission lines that was recently tested as a universal expression has been further modified based on the difference algebraic converging method. The tiny experimental line errors that may lead to amplified errors in the determination of high J lines were taken into account in the formula. Applications are presented for the R-branch emission spectra of (2-0), (3-1), (6-4), and (7-5) overtone bands of the ground electronic state of 12C16O. The rotational constants and band origins that are consistent with those reported previously are determined through the analytical formula for predicting frequency for emission lines up to J = 110. The results are shown to not only compare favorably with available lower J lines, but also generate reasonable higher J lines for the overtone bands, which agree with data from the HITRAN database and other works.
