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
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Energy band dispersion in photoemission spectra of argon clusters
چکیده انگلیسی
Using photoemission we have investigated free argon clusters from a supersonic nozzle expansion in the photon energy range from threshold up to 28 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 ≈1.5 eV broad 3p-derived valence band seen in previous work, there is a sharper feature at ≈15 eV binding energy. Surprisingly for non-oriented clusters, this peak shifts smoothly in binding energy over the narrow photon energy range 15.5-17.7 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 3–6, April 2011, Pages 107-112
نویسندگان
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