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Absolute Absorption Cross-Section of the (A)over-tilde <-(X)over-tilde Electronic Transition of the Ethyl Peroxy Radical and Rate Constant of Its Cross Reaction with HO2

文献类型：期刊论文

作者Zhang, Cuihong1,2,3; Shamas, Mirna1; Assali, Mohamed1; Tang, Xiaofeng2,3; Zhang, Weijun2,3; Pillier, Laure1; Schoemaecker, Coralie1; Fittschen, Christa1
刊名PHOTONICS
出版日期2021-08-01
卷号8
关键词peroxy radicals near-infrared spectroscopy (A)over-tilde <-(X)over-tilde electronic transition cavity ring down spectroscopy
DOI10.3390/photonics8080296
通讯作者Fittschen, Christa(Christa.Fittschen@univ-lille.fr)
英文摘要The absolute absorption cross-section of the ethyl peroxy radical C2H5O2 in the A <- X similar to electronic transition with the peak wavelength at 7596 cm(-1) has been determined by the method of dual wavelengths time resolved continuous wave cavity ring down spectroscopy. C2H5O2 radicals were generated from pulsed 351 nm photolysis of C2H6/Cl-2 mixture in presence of 100 Torr O-2 at T = 295 K. C2H5O2 radicals were detected on one of the CRDS paths. Two methods have been applied for the determination of the C2H5O2 absorption cross-section: (i) based on Cl-atoms being converted alternatively to either C2H5O2 by adding C2H6 or to hydro peroxy radicals, HO2, by adding CH3OH to the mixture, whereby HO2 was reliably quantified on the second CRDS path in the 2 nu(1) vibrational overtone at 6638.2 cm(-1) (ii) based on the reaction of C2H5O2 with HO2, measured under either excess HO2 or under excess C2H5O2 concentration. Both methods lead to the same peak absorption cross-section for C2H5O2 at 7596 cm(-1) of sigma = (1.0 +/- 0.2) x 10(-20) cm(2). The rate constant for the cross reaction between of C2H5O2 and HO2 has been measured to be (6.2 +/- 1.5) x 10(-12) cm(3) molecule(-1) s(-1).
WOS关键词RING-DOWN SPECTROSCOPY ; GAS-PHASE REACTIONS ; CW-CAVITY RING ; ATMOSPHERIC CHEMISTRY ; PHOTOCHEMICAL DATA ; FLASH-PHOTOLYSIS ; LINE STRENGTHS ; SELF-REACTION ; 2-NU(1) BAND ; KINETICS
资助项目French ANR agency[ANR-11-Labx-0005-01] ; Region Hauts-de-France ; Ministere de l'Enseignement Superieur et de la Recherche (CPER Climibio) ; European Fund for Regional Economic Development ; Chinese Academy of Sciences President's International Fellowship Initiative[2018VMA0055] ; Chinese Scholarship Council[202006340125]
WOS研究方向Optics
语种英语
WOS记录号WOS:000690213200001
出版者MDPI
资助机构French ANR agency ; Region Hauts-de-France ; Ministere de l'Enseignement Superieur et de la Recherche (CPER Climibio) ; European Fund for Regional Economic Development ; Chinese Academy of Sciences President's International Fellowship Initiative ; Chinese Scholarship Council
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/125165]  
专题中国科学院合肥物质科学研究院
通讯作者Fittschen, Christa
作者单位1.Univ Lille, CNRS, UMR 8522, Physicochim Proc Combust & Atmosphere PC2A, F-59000 Lille, France
2.Chinese Acad Sci, HFIPS, Anhui Inst Opt & Fine Mech, Lab Atmospher Physicochem, Hefei 230031, Peoples R China
3.Univ Sci & Technol China, Grad Sch, Sci Isl Branch, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Cuihong,Shamas, Mirna,Assali, Mohamed,et al. Absolute Absorption Cross-Section of the (A)over-tilde <-(X)over-tilde Electronic Transition of the Ethyl Peroxy Radical and Rate Constant of Its Cross Reaction with HO2[J]. PHOTONICS,2021,8.
APA Zhang, Cuihong.,Shamas, Mirna.,Assali, Mohamed.,Tang, Xiaofeng.,Zhang, Weijun.,...&Fittschen, Christa.(2021).Absolute Absorption Cross-Section of the (A)over-tilde <-(X)over-tilde Electronic Transition of the Ethyl Peroxy Radical and Rate Constant of Its Cross Reaction with HO2.PHOTONICS,8.
MLA Zhang, Cuihong,et al."Absolute Absorption Cross-Section of the (A)over-tilde <-(X)over-tilde Electronic Transition of the Ethyl Peroxy Radical and Rate Constant of Its Cross Reaction with HO2".PHOTONICS 8(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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