کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9818173 | 1518777 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Advances in Dynamic Analysis PIXE imaging: Correction for spatial variation of pile-up components
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
The Dynamic Analysis matrix transform facilitates generation of real-time quantitative elemental proton induced X-ray emission (PIXE) images. However, samples with strongly varying sample composition can lead to significant spatially varying concentration errors due to strong matrix effects or the overlap of pile-up lines that change in nature across the sample. The elements responsible for the highest count rate X-ray lines may change spatially, which means that the nature of the “pile-up element” changes across the sample. This is a non-linear effect, related to the product of X-ray intensities for the dominant elements in each pixel. However, both matrix and pile-up effects are related to composition variation. Hence, it is possible to determine all these in a self-consistent fashion. This paper describes treatment for these pile-up effects in the GeoPIXE software and illustrates their application to imaging in geology.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 231, Issues 1â4, April 2005, Pages 162-169
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 231, Issues 1â4, April 2005, Pages 162-169
نویسندگان
C.G. Ryan, E. van Achterbergh, D.N. Jamieson,