کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5396454 | 1505751 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Energy band dispersion in photoemission spectra of argon clusters
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Using photoemission we have investigated free argon clusters from a supersonic nozzle expansion in the photon energy range from threshold up to 28Â eV. Measurements were performed both at high resolution with a hemispherical electrostatic energy analyser and at lower resolution with a magnetic bottle device. The latter experiments were performed for various mean cluster sizes. In addition to the â1.5Â eV broad 3p-derived valence band seen in previous work, there is a sharper feature at â15Â eV binding energy. Surprisingly for non-oriented clusters, this peak shifts smoothly in binding energy over the narrow photon energy range 15.5-17.7Â eV, indicating energy band dispersion. The onset of this bulk band-like behaviour could be determined from the cluster size dependence.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 184, Issues 3â6, April 2011, Pages 107-112
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 184, Issues 3â6, April 2011, Pages 107-112
نویسندگان
Marko Förstel, Melanie Mucke, Tiberiu Arion, Toralf Lischke, Silko Barth, Volker Ulrich, Gunnar Ãhrwall, Olle Björneholm, Uwe Hergenhahn, Alex M. Bradshaw,