RESONANCE-ENHANCED MULTIPHOTON IONIZATION SPECTRA OF THE HALOGEN ATOMS
Chen Yang (陈旸), Pei Lin-sen (裴林森), Jin Jin (金瑾), Ran Qin (冉琴), Chen Cong-xiang (陈从香), Yu Shu-qin (俞书勤), Ma Xing-xiao (马兴孝)
Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China, and Open Laboratory of Bond Selective Chemistry, Chinese Academy of Sciences, Hefei 230026, China
Abstract The resonance-enhanced multiphoton ionization (REMPI) spectra of atomic chlorine and bromine in the range of 230-245 nm and 250-285 nm were obtained by using REMPI and time of flight (TOF) techniques. There are twenty-six lines for Cl and twenty-three for Br in the spectra, among which five transitions of Cl and four of Br are observed for the first time. These lines are due to transitions from the Cl(3p 2P03/2, 2P01/2) and Br(4p2P03/2, 2P01/2) states to upper states induced by two-photon excitation. It is found that the Stark shift of different excited states are almost the same, and they are independent of the S, L, and J quantum numbers of the excited state.
Received: 27 November 1998
Revised: 16 March 1999
Accepted manuscript online:
PACS:
32.80.Rm
(Multiphoton ionization and excitation to highly excited states)
Fund: Project supported by the National Natural Science Foundation (Grant No. 29B43001), the "Ninth Five-Year plan" Climbing Program and the important project of the Chinese Academy of Sciences.
Cite this article:
Chen Yang (陈旸), Pei Lin-sen (裴林森), Jin Jin (金瑾), Ran Qin (冉琴), Chen Cong-xiang (陈从香), Yu Shu-qin (俞书勤), Ma Xing-xiao (马兴孝) RESONANCE-ENHANCED MULTIPHOTON IONIZATION SPECTRA OF THE HALOGEN ATOMS 1999 Acta Physica Sinica (Overseas Edition) 8 490
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