کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9575235 | 1504344 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An experimental and theoretical study of the photoelectron spectrum of hydrogen selenide
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: An experimental and theoretical study of the photoelectron spectrum of hydrogen selenide An experimental and theoretical study of the photoelectron spectrum of hydrogen selenide](/preview/png/9575235.png)
چکیده انگلیسی
The photoelectron spectrum of hydrogen selenide has been recorded using synchrotron radiation in the photon energy range 15-110 eV and the inner valence region has been studied in detail for the first time. Green's function methods have been employed to evaluate the ionisation energies and spectral intensities of all valence states and the results have facilitated an interpretation of the experimental spectra. Two outer valence satellites have been observed at binding energies of â¼17 and â¼18.5 eV. The continuum multiple scattering (CMS-Xα) approach has been used to calculate photoelectron asymmetry parameters and branching ratios for the outer valence orbitals and these have been compared with experimental data. The Se 4p Cooper minimum strongly affects the photoionisation dynamics of the outermost 4b1 orbital and its influence is evident in both the theoretically predicted and the measured asymmetry parameter for the XË2B1 state. The experimental data for the AË2A1 and BË2B2 state asymmetry parameters also display energy dependent variations in the vicinity of the Cooper minimum. However, for these two states the agreement between the predicted and observed asymmetry parameters is less satisfactory. The present results for H2Se have been compared with similar data for the closely related H2S molecule.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 315, Issues 1â2, 8 August 2005, Pages 121-132
Journal: Chemical Physics - Volume 315, Issues 1â2, 8 August 2005, Pages 121-132
نویسندگان
I. Powis, J.D. Thrower, A.B. Trofimov, T.E. Moskovskaya, J. Schirmer, A.W. Potts, D.M.P. Holland, F. Bruhn, L. Karlsson,