Electronic Population Inversion in HCCO/DCCO Products from Hyperthermal Collisions of O(P-3) with HCCH/DCCD

	Electronic Population Inversion in HCCO/DCCO Products from Hyperthermal Collisions of O(P-3) with HCCH/DCCD
	Lahankar, Sridhar A.1; Zhang, Jianming 1; Garashchuk, Sophya 3; Schatz, George C.4; Minton, Timothy K.1,2
刊名	journal of physical chemistry letters
	2013-04-18
卷号	4 期号:8 页码:1315-1321
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.
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000317950400014
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/137491]
专题	大连化学物理研究所_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
推荐引用方式 GB/T 7714	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.