کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1681704 | 1010445 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
N to K Uranium PIXE spectra obtained at the high resolution high energy PIXE setup
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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![عکس صفحه اول مقاله: N to K Uranium PIXE spectra obtained at the high resolution high energy PIXE setup N to K Uranium PIXE spectra obtained at the high resolution high energy PIXE setup](/preview/png/1681704.png)
چکیده انگلیسی
The CTN (previous ITN) high resolution high energy (HRHE) PIXE set-up facility was set in operation on July 2008 and upgrades were being implemented until late in 2011. The study of a pure UO2 sample and the mapping of geological sample are the first results where the whole range of possibilities has been exploited, namely the possibility of obtaining simultaneous spectra covering a very wide energy range of more than 100Â keV. In this paper, the N-shell to K-shell spectra of Uranium is presented and discussed, as well as the details on the characteristics and capacities of the setup, including the automated X-Y positioning systems installed in the X-Y-Z sample support unit, which allows for the possibility of making macroscopic mappings of geological samples (Chaves et al. (2013) [1]). As for the N-shell lines in the X-ray Microcalorimeter Spectrometer (XMS) spectrum, due to the lack of data (Zschornack (2007) [2]), transition energies were determined using ab initio calculations assuming a closed shell U4+ electronic structure for Uranium prior to the ionisation by proton impact.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 318, Part A, 1 January 2014, Pages 60-64
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 318, Part A, 1 January 2014, Pages 60-64
نویسندگان
P.C. Chaves, A. Taborda, J.P. Marques, M.A. Reis,