کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1686762 1010622 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low-energy electron elastic scattering cross sections for excited Au and Pt atoms
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Low-energy electron elastic scattering cross sections for excited Au and Pt atoms
چکیده انگلیسی

Electron elastic total cross sections (TCSs) and differential cross sections (DCSs) in both impact energy and scattering angle for the excited Au and Pt atoms are calculated in the electron impact energy range 0 ⩽ E ⩽ 4.0 eV. The cross sections are found to be characterized by very sharp long-lived resonances whose positions are identified with the binding energies of the excited anions formed during the collisions. The recent novel Regge-pole methodology wherein is embedded through the Mulholland formula the electron–electron correlations is used together with a Thomas–Fermi type potential incorporating the crucial core-polarization interaction for the calculations of the TCSs. The DCSs are evaluated using a partial wave expansion. The Ramsauer–Townsend minima, the shape resonances and the binding energies of the excited Au− and Pt− anions are extracted from the cross sections, while the critical minima are determined from the DCSs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 268, Issue 9, 1 May 2010, Pages 1370–1375
نویسندگان
, , , ,