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题名: Molecular beam study of gateway-coupling N-2(C-3 Pi(u)/a '(1)Sigma(-)(u)) and chemical quenching of the metastable N-2(a ') state
作者: Ottinger, C;  Shen, G
刊名: JOURNAL OF CHEMICAL PHYSICS
发表日期: 1998-02-01
卷: 108, 期:5, 页:1997-2004
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: Collisions of metastable N-2 molecules in a beam with a variety of gases result in nitrogen "second positive" emission from a single, isolated level N-2 (C (3) Pi(u1), upsilon = 0, J = 14). The highly selective collisional excitation was explained by a gateway-type coupling with the accidentally nearly degenerate level N-2 (a' (1) Sigma(u)(-), upsilon = 16, J = 14). This identifies even the Lambda component of the emitting level, namely "f". Some additional, minor gateway emissions could in part be related to known N-2(C) perturbations. Unlike gateway emissions reported earlier from this laboratory, the nature of the collision partner was important here. He, Ne, Ar, Kr, N-2, CO, and CO2, all gave about equally strong emission, while almost none was observed with NH3, O-2, and Xe. This is ascribed to the collisional quenching of N-2(a') by Penning ionization (for NH3) or by a harpooning mechanism (for Xe and O-2). (C) 1998 American Institute of Physics.
关键词[WOS]: INTRAMOLECULAR COLLISIONAL TRANSFER ;  PRECISE TERM ENERGY ;  INDUCED TRANSITIONS ;  N2(B 3-PI-G) ;  N-2 ;  EMISSION ;  NITROGEN ;  PREDISSOCIATION ;  FLUORESCENCE ;  3-SIGMA-U+)
语种: 英语
WOS记录号: WOS:000071748000030
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138128
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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作者单位: 1.Max Planck Inst Stromungsforsch, D-37073 Gottingen, Germany
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Ottinger, C,Shen, G. Molecular beam study of gateway-coupling N-2(C-3 Pi(u)/a '(1)Sigma(-)(u)) and chemical quenching of the metastable N-2(a ') state[J]. JOURNAL OF CHEMICAL PHYSICS,1998,108(5):1997-2004.
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