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题名: OPTICAL OPTICAL DOUBLE-RESONANCE MULTIPHOTON IONIZATION SPECTROSCOPY OF AMMONIA-D3 .2. JAHN-TELLER EFFECT AND RELATED FERMI RESONANCE OF THE (B)TILDE-1E'' STATE
作者: LI, XN;  XIE, XB;  LI, L;  WANG, XT;  ZHANG, OH
刊名: JOURNAL OF CHEMICAL PHYSICS
发表日期: 1992-07-01
卷: 97, 期:1, 页:128-136
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Physics
英文摘要: By selecting a number of resonant A 2(1) rotational lines in the optical-optical double resonance multiphoton ionization spectroscopy (OODR-MPI) of ammonia-d3, we have obtained rotationally resolved spectra of the ND3 B<--A 2(1)<--X0(0) transitions in the range of 550-730 nm, in which not only were we able to reanalyze rotationally the previously studied bands [J. Opt. Soc. Am. B 7, 1884(1990) ], but also to assign rotationally and vibronically some novel spectra pertaining to the v1, v3, v4, and v3 + v4 excitations. Based on the symmetry assignment and the relationship of the vibronic coupling level energies between the single and dual mode cases, we have found that the Jahn-Teller splitting of the ND3 B state invokes a novel type of the Fermi resonance, the nonadiabatic Fermi resonance. By taking account of this Fermi resonance, the modified vibronic coupling parameters of the V3 and v4 modes were calculated to be lambda-3 = 0.047 and lambda-4 = 0.023, which agrees well with the previous theoretical expectation that the ammonia B state is subject to a mild dynamic Jahn-Teller effect. At present, four pairs of the nonadiabatic Fermi resonance have been discovered among the ND3 nonadiabatic levels, which can be separated into two types-one with the same selection rules as a conventional Fermi resonance, i.e., B 3(1)(1/2)-B 4(2)(5/2), B 1(1)-B 4(2)(1/2), and B 3(1)(3/2)-B 4(2)(3/2), the last of which was studied quantitatively with a coupling parameter K = 114, and the other with novel selection rules, i.e., B 3(1)(1/2)-B 1(1).
关键词[WOS]: SUBSTITUTED BENZENE CATIONS ;  DYNAMICS ;  IONS
语种: 英语
WOS记录号: WOS:A1992JA79200016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139821
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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Recommended Citation:
LI, XN,XIE, XB,LI, L,et al. OPTICAL OPTICAL DOUBLE-RESONANCE MULTIPHOTON IONIZATION SPECTROSCOPY OF AMMONIA-D3 .2. JAHN-TELLER EFFECT AND RELATED FERMI RESONANCE OF THE (B)TILDE-1E'' STATE[J]. JOURNAL OF CHEMICAL PHYSICS,1992,97(1):128-136.
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