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    题名: Rotationally resolved fluorescence excitation spectrum produced through photoexcitation of the coupled c '(4)(0) and b '(1) states of N(2)
    作者: Wu,CYR;Lo,JI;Lin,YC;Fung,HS;Lee,YY;Yih,TS;Judge,DL
    贡献者: 物理學系
    关键词: VUV ABSORPTION-SPECTRUM;SINGLET UNGERADE STATES;MOLECULAR NITROGEN;HIGH-RESOLUTION;LIFETIME MEASUREMENTS;OSCILLATOR-STRENGTHS;VOYAGER-1 ENCOUNTER;FAR-ULTRAVIOLET;RYDBERG STATES;PREDISSOCIATION
    日期: 2011
    上传时间: 2012-06-11 10:51:30 (UTC+8)
    出版者: 國立中央大學
    摘要: Employing a high-resolution spectrometer in a synchrotron radiation facility we have demonstrated the feasibility of studying rotationally resolved fluorescence excitation spectra (FES) in the extreme ultraviolet region. Specifically, we have obtained FES spectrum of the (1,0) band of the b' (1)Sigma(+)(u)-X(1) Sigma(+)(g) transition using a resolution of 0.0024 nm and the resonance FES of the (0,0) band of the c'(4) (1)Sigma(+)(u)-X(1) Sigma(+)(g) transition using a resolution of 0.0048 nm produced through photoexcitation of N(2) in the spectral region between 95.75 and 96.00 nm. Strong local rotational perturbation between the c'(4) (0) and the b'(1) states occurring at excited rotational levels J' = 10 and 11 has been confirmed in the FES of the b' (1)Sigma(+)(u)-X(1) Sigma(+)(g) transition, in excellent agreement with early absorption spectroscopic study. From the observed relative fluorescence intensities we conclude that the production of the intense emission of the (1,0) b'-X transition is at the expense of the (0,0) c'(4) -X emission of N(2). The c'(4)(0) state apparently prefers to radiate back to the ground electronic state while the b'(1) state appears to favor branching to the a(1) Pi(g) state and the subsequent a (1)Pi(g) -> X(1) Sigma(+)(g) transition. (C) 2011 Elsevier B.V. All rights reserved.
    關聯: JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
    显示于类别:[物理學系] 期刊論文

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