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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
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY LETTERS
2013-04-18
DOI10.1021/jz400568t
Volume4Issue:8Pages:1315-1321
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS KeywordCROSSED MOLECULAR-BEAM ; REACTIVE SCATTERING ; DYNAMICS ; HCCO ; PHOTODISSOCIATION ; COMBUSTION ; EXAMPLE ; ENERGY ; STATE ; PATH
AbstractThe 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.
Language英语
WOS IDWOS:000317950400014
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/137491
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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.
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