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Electronic Population Inversion in HCCO/DCCO Products from Hyperthermal Collisions of O(P-3) with HCCH/DCCD
Lahankar, Sridhar A.1; Zhang, Jianming1; Garashchuk, Sophya3; Schatz, George C.4; Minton, Timothy K.1,2
刊名JOURNAL OF PHYSICAL CHEMISTRY LETTERS
2013-04-18
DOI10.1021/jz400568t
4期:8页:1315-1321
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]CROSSED MOLECULAR-BEAM ; REACTIVE SCATTERING ; DYNAMICS ; HCCO ; PHOTODISSOCIATION ; COMBUSTION ; EXAMPLE ; ENERGY ; STATE ; PATH
英文摘要The dynamics of hyperthermal O(P-3) reactions with acetylene have been investigated with the use of crossed molecular beams techniques, employing both mass spectrometric and optical detection of products. With collision energies of 40-150 kcal mol(-1), O(P-3) + HCCH/DCCD -> HCCO/DCCO + H/D may follow multiple pathways to form the ketenyl radical (HCCO or DCCO) in ground doublet states or in electronically excited quartet and doublet states. Theoretical calculations support the assignment of the various reaction pathways. The fraction of electronic excitation is substantial. At the highest collision energy studied, similar to 65% of the ketenyl radical products that survive are electronically excited, with the majority of the excited products in a quartet state. In this case, a population inversion exists between the electronically excited quartet and ground doublet states of the ketenyl product. Such significant electronic excitation in products is unusual in bimolecular reactions, especially when ground-state products are accessible by spin-allowed pathways.
语种英语
WOS记录号WOS:000317950400014
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/137491
专题中国科学院大连化学物理研究所
作者单位1.Montana State Univ, Dept Chem & Biochem, Bozeman, MT 59717 USA
2.Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China
3.Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA
4.Northwestern Univ, Dept Chem, Evanston, IL 60208 USA
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Lahankar, Sridhar A.,Zhang, Jianming,Garashchuk, Sophya,et al. Electronic Population Inversion in HCCO/DCCO Products from Hyperthermal Collisions of O(P-3) with HCCH/DCCD[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2013,4(8):1315-1321.
APA Lahankar, Sridhar A.,Zhang, Jianming,Garashchuk, Sophya,Schatz, George C.,&Minton, Timothy K..(2013).Electronic Population Inversion in HCCO/DCCO Products from Hyperthermal Collisions of O(P-3) with HCCH/DCCD.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,4(8),1315-1321.
MLA Lahankar, Sridhar A.,et al."Electronic Population Inversion in HCCO/DCCO Products from Hyperthermal Collisions of O(P-3) with HCCH/DCCD".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 4.8(2013):1315-1321.
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