Publication Date:
2006-03-11
Description:
Reaction resonances, or transiently stabilized transition-state structures, have proven highly challenging to capture experimentally. Here, we used the highly sensitive H atom Rydberg tagging time-of-flight method to conduct a crossed molecular beam scattering study of the F + H2 --〉 HF + H reaction with full quantum-state resolution. Pronounced forward-scattered HF products in the v' = 2 vibrational state were clearly observed at a collision energy of 0.52 kcal/mol; this was attributed to both the ground and the first excited Feshbach resonances trapped in the peculiar HF(v' = 3)-H' vibrationally adiabatic potential, with substantial enhancement by constructive interference between the two resonances.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Qiu, Minghui -- Ren, Zefeng -- Che, Li -- Dai, Dongxu -- Harich, Steve A -- Wang, Xiuyan -- Yang, Xueming -- Xu, Chuanxiu -- Xie, Daiqian -- Gustafsson, Magnus -- Skodje, Rex T -- Sun, Zhigang -- Zhang, Dong H -- New York, N.Y. -- Science. 2006 Mar 10;311(5766):1440-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P. R. China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16527975" target="_blank"〉PubMed〈/a〉
Keywords:
Electrons
;
Fluorine/*chemistry
;
Hydrogen/*chemistry
;
Models, Chemical
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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