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学科主题: 物理化学
题名: Ion-Velocity Map Imaging Study of Photodissociation Dynamics of Acetaldehyde
作者: Zhang, Zhi-guo1, 2, 3;  Chen, Zhi-chao3;  Zhan, Cui-mei1, 2, 3;  Jin, Yan-ling3;  Zhang, Qun1, 2;  Chen, Yang1, 2;  Huang, Cun-shun3;  Yang, Xue-ming1, 2, 3
通讯作者: 张群 ;  陈旸 ;  黄存顺
关键词: Ion-velocity map imaging ;  Photodissociation dynamics ;  Acetaldehyde
刊名: CHINESE JOURNAL OF CHEMICAL PHYSICS
发表日期: 2014-06-01
DOI: 10.1063/1674-0068/27/03/249-255
卷: 27, 期:3, 页:249-255
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: The photodissociation dynamics of acetaldehyde in the radical channel CH3+FICO has been reinvestigated using time-sliced velocity map imaging technique in the photolysis wavelength range of 275-321 nm. The CH3 fragments have been probed via (2+1) resonance-enhanced multiphoton ionization. Images are measured for CH3 formed in the ground and excited states (v(2)=0 and 1) of the umbrella vibrational mode. For acetaldehyde dissociation on T-1 state after intersystem crossing from S-1 state, the products are formed with high translational energy release and low internal excitation. The rotational and vibrational energy of both fragments increases with increasing photodissociation energy. The triplet barrier height is estimated at 3.881 +/- 0.006 eV above the ground state of acetaldehyde.
关键词[WOS]: INITIO MOLECULAR-DYNAMICS ;  POTENTIAL-ENERGY SURFACE ;  TRANSITION-STATE ;  TRIPLET ACETALDEHYDE ;  ROAMING MECHANISM ;  DISSOCIATION ;  HCO ;  DECOMPOSITION ;  CHANNEL ;  CH3CHO
语种: 英语
WOS记录号: WOS:000338977300001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144289
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.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China
3.Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Zhang, Zhi-guo,Chen, Zhi-chao,Zhan, Cui-mei,et al. Ion-Velocity Map Imaging Study of Photodissociation Dynamics of Acetaldehyde[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2014,27(3):249-255.
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