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题名: Photodissociation Cross Section of ClOOCl at 330 nm
作者: Jin, Bing1, 2;  Chen, I-Cheng1;  Huang, Wen-Tsung1, 3;  Lien, Chien-Yu1;  Guchhait, Nikhil1, 4;  Lin, Jim J.1, 3
通讯作者: 林志民
刊名: JOURNAL OF PHYSICAL CHEMISTRY A
发表日期: 2010-04-15
DOI: 10.1021/jp909374k
卷: 114, 期:14, 页:4791-4797
收录类别: SCI ;  ISTP
文章类型: Article
部门归属: 11
项目归属: 1101
产权排名: 2;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: The photolysis rate of ClOOCl is crucial in the catalytic destruction of polar stratospheric ozone. In this work, we determined the photodissociation cross section of ClOOCl at 330 nm with a molecular beam and with mass-resolved detection. The photodissociation cross section is the product of the absorption cross section and the dissociation quantum yield. We formed an effusive molecular beam of ClOOCl at a nozzle temperature of 200 or 250 K and determined its photodissociation probability by measuring the decrease of the ClOOCl intensity upon laser irradiation. By comparing with a reference molecule (Cl-2), of which the absorption cross section and dissociation quantum yield are well-known, we determined the absolute photodissociation cross section of ClOOCl at 330 nm to be (2.31 +/- 0.11) x 10(-19) cm(2) at 200 K and (2.47 +/- 0.12) x 10(-19) cm(2) at 250 K. Impurity interference has been a well-recognized problem in conventional spectroscopic studies of ClOOCl; our mass-resolved measurement directly overcomes such a problem. This measurement of the ClOOCl photolysis cross section at 330 nm is particularly useful in constraining its atmospheric photolysis rate, which in the polar stratosphere peaks near this wavelength.
关键词[WOS]: CHLORINE PEROXIDE ;  OZONE DEPLETION ;  DIMER ;  SPECTRUM ;  CL2O2
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000276341300014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/103399
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.Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan
4.Univ Calcutta, Dept Chem, Kolkata 700009, India

Recommended Citation:
Jin, Bing,Chen, I-Cheng,Huang, Wen-Tsung,et al. Photodissociation Cross Section of ClOOCl at 330 nm[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2010,114(14):4791-4797.
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