Observation of new Rydberg series in the many-electron transition region of N 2

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题名:	Observation of new Rydberg series in the many-electron transition region of N 2
作者:	朱慶琪;Lo, J.-I.;Tsai, M.-H.;Fung, H.-S.;Chen, Y.-J.;Chu, C.-C.;Yih, T.-S.;Lee, Y.-Y.;Wu, C. Y. R.;Judge, D. L.
贡献者:	理學院物理學系
关键词:	Channels;Cross sections;Excitation;Excitation spectra;Fluorescence;Monitors;Rydberg series;Spectra
日期:	2012-08-07
上传时间:	2026-04-23 12:34:09 (UTC+8)
出版者:	American Institute of Physics;United States
摘要:	摘要： Fluorescence excitation spectra produced through photoexcitation of N2 using synchrotron radiation in the spectral region between 50 and 62.5 nm have been obtained with a resolution of 0.004 nm. A broadband detector (in the 115–180 nm region) was employed to monitor fluorescence originated from neutral excited atomic nitrogen fragments which are produced through direct dissociation processes and predissociation from the well-known many-electron excited Rydberg states. We have identified a new Rydberg series (2 2Πg) 4sσ, a better resolved Rydberg (D 2Πg) npσ series, and also the prominent Codling series converging to the D 2Πg, and C 2Σu+ states of N2+, respectively. By normalizing our relative fluorescence intensities to previously measured absolute fluorescence cross-section data we obtain the cross-section data of undispersed fluorescence in the 115–180 nm region. The fluorescence quantum yields for the present photodissociative excitation processes are found to be less than 0.05. The present results may provide important data for our understanding of competitions among the various decay channels of the many-electron transition states of N2. 其他題名： J Chem Phys 出版者： United States 出版日期： 2012-08-07 出處： The Journal of chemical physics, 2012-08, Vol.137 (5), p.054315 資源來源： AIP Journals (American Institute of Physics) 識別號： ISSN: 0021-9606 識別號： ISSN: 1089-7690 識別號： EISSN: 1089-7690 識別號： DOI: 10.1063/1.4740463 識別號： PMID: 22894356
显示于类别:	[物理學系] 期刊論文

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