کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5375713 | 1504306 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of electronic autoionisation on the N2O+Aâ¼2Σ+ state vibrational populations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Dispersed fluorescence spectroscopy has been employed to study vibrational selectivity accompanying electronic autoionisation in N2O. Vibrationally resolved fluorescence excitation spectra of the N2O+Aâ¼2Σ+âXâ¼2Î transition have been recorded in the photon energy range 16.2-20.7 eV to monitor the formation of (0 0 0), (1 0 0), (2 0 0), (0 0 1) and (1 0 1) Aâ¼2Σ+ state ions. The spectra exhibit prominent structure due to autoionisation from Rydberg states belonging to series converging onto the (0 0 0) Câ¼2Σ+ limit. Of the five series converging onto this limit, the most significant enhancement in the population of vibrationally excited Aâ¼2Σ+ state ions occurs via autoionisation from the ndÏ or ndÏ series. Within a single Rydberg series, the degree of vibrational enhancement varies considerably with principal quantum number. Previously unobserved bands in the N2O+Aâ¼2Σ+âXâ¼2Î dispersed fluorescence spectrum have been assigned using energy levels determined in photoelectron spectroscopic studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 352, Issues 1â3, 3 September 2008, Pages 217-223
Journal: Chemical Physics - Volume 352, Issues 1â3, 3 September 2008, Pages 217-223
نویسندگان
D.A. Shaw, D.M.P. Holland,