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	Ion-pair dissociation dynamics of Cl/sub 2/: Adiabatic state correlation
	Chang Zhou ; Yusong Hao ; Yuxiang Mo
	2010-10-12 ; 2010-10-12
关键词	Experimental/ chlorine molecule-photon collisions photodissociation predissociation Rydberg states spin-orbit interactions ultraviolet photoelectron spectra/ ion-pair dissociation dynamics chlorine coherent extreme ultraviolet radiation velocity map imaging method ion-pair yield spectrum spin-orbit components anisotropic parameters predissociation Rydberg states symmetric properties total electronic angular momentum adiabatic state correlation XUV photoelectron spectrometer photoion spectrometer electron volt energy 12.41 eV to 12.74 eV Cl/sub 2/ Cl/sup -/ Cl/sup +// A3380G Diffuse molecular spectra predissociation, photodissociation A3150 Excited states of atoms and molecules A3365C UV and VUV photoelectron spectra of molecules/ electron volt energy 1.241E+01 to 1.274E+01 eV/ Cl2/el Cl/el Cl/el Cl/el
中文摘要	The ion-pair dissociation dynamics of Cl/sub 2/ rarr XUV CI/sup -/(3P/sub 21.0/) + Cl/sup +/(/sup 3/P/sub 21.0/) in the range 12.41-12.74 eV have been studied employing coherent extreme ultraviolet (XUV) radiation and the velocity map imaging method. The ion-pair yield spectrum has been measured, and 72 velocity map images of Cl/sup -/(/sup 1/S/sub 0/) have been recorded for the peaks in the spectrum. From the images, the branching ratios among the three spin-orbit components Cl/sup +/(/sup 3/P/sub 2/), Cl/sup +/(/sup 3/P/sub 1/) and Cl/sup +/(/sup 3/P/sub 0/) and their corresponding anisotropic parameters beta have been determined. The ion-pair dissociation mechanism is explained by predissociation of Rydberg states converging to ion-core Cl/sub 2//sup +/(A Pi /sub u/). The Cl/sup -/(/sup 1/S/sub 0/) ion-pair yield spectrum has been assigned based on the symmetric properties of Rydberg states determined in the imaging experiments. The parallel and perpendicular transitions correspond to the excitation to two major Rydberg series, [A/sup 2/ Pi /sub u/]3d pi /sub g/,/sup 1/ Sigma /sub u//sup +/ and [A/sup 2/ Pi /sub u/]5s sigma /sub g/, /sup 1/ Pi /sub u/, respectively. For the production of Cl+(3Po), it is found that all of them are from parallel transitions. But for Cl/sup +/(/sup 3/P/sub 1/), most of them are from perpendicular transitions. The production of Cl/sup +/(/sup 3/P/sub 2/) is the major channel in this energy region, and they come from both parallel and perpendicular transitions. It is found that for most of the predissociations the projection of the total electronic angular momentum on the molecular axis ( Omega ) is conserved. The ion-pair dissociation may be regarded as a probe for the symmetric properties of Rydberg states.
语种	英语
出版者	American Chemical Society ; USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81444]
专题	清华大学
推荐引用方式 GB/T 7714	Chang Zhou,Yusong Hao,Yuxiang Mo. Ion-pair dissociation dynamics of Cl/sub 2/: Adiabatic state correlation[J],2010, 2010.
APA	Chang Zhou,Yusong Hao,&Yuxiang Mo.(2010).Ion-pair dissociation dynamics of Cl/sub 2/: Adiabatic state correlation..
MLA	Chang Zhou,et al."Ion-pair dissociation dynamics of Cl/sub 2/: Adiabatic state correlation".(2010).

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