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题名: Photodissociation cross sections of ClOOCl at 248.4 and 266 nm
作者: Lien, Chien-Yu1;  Lin, Wei-Yen1, 2;  Chen, Hsueh-Ying1;  Huang, Wen-Tsung1, 2;  Jin, Bing1, 3;  Chen, I-Cheng1;  Lin, Jim J.1, 2, 4
通讯作者: 林志民
关键词: chlorine compounds ;  photodissociation ;  spectrochemical analysis
刊名: JOURNAL OF CHEMICAL PHYSICS
发表日期: 2009-11-07
DOI: 10.1063/1.3257682
卷: 131, 期:17, 页:174301-1-174301-6
收录类别: SCI
文章类型: Article
部门归属: 11
项目归属: 1101
产权排名: 3;5
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: This study utilized a mass-resolved detection of ClOOCl to determine its photodissociation cross section, which is the product of the absorption cross section and dissociation quantum yield. An effusive molecular beam of ClOOCl was generated and its photodissociation probability was determined through measuring the decrease in the ClOOCl beam intensity upon laser irradiation. By comparing with a reference molecule, the absolute cross sections of ClOOCl were obtained without knowing its absolute concentration. The determined cross section of ClOOCl at 248.4 nm is (8.85 +/- 0.42)x10(-18) cm(2) at 200 K, significantly larger than previously reported values. The temperature dependence of the cross section was investigated at 248.4 nm in the range of 160-260 K; only a very small and negative temperature effect was observed. Because 248.4 nm is very close to the peak of the UV absorption band of ClOOCl, this work provides a new calibration point for normalizing relative absorption spectra of ClOOCl. In this work, the photodissociation cross section at 266 nm and 200 K was also reported to be (4.13 +/- 0.21)x10(-18) cm(2).
关键词[WOS]: DICHLORINE MONOXIDE CL2O ;  ULTRAVIOLET-SPECTRUM ;  CHLORINE PEROXIDE ;  OZONE DEPLETION ;  SELF-REACTION ;  DIMER ;  PHOTOLYSIS ;  DYNAMICS ;  HOCL ;  DEPENDENCE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000271664500021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101947
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.Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan
3.Chinese Acad Sci, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
4.Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 30010, Taiwan

Recommended Citation:
Lien, Chien-Yu,Lin, Wei-Yen,Chen, Hsueh-Ying,et al. Photodissociation cross sections of ClOOCl at 248.4 and 266 nm[J]. JOURNAL OF CHEMICAL PHYSICS,2009,131(17):174301-1-174301-6.
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