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Complex ion beam based depth profiling of anticorrosive layers
Holeňák, Radek ; Král, Jaroslav (oponent) ; Bábor, Petr (vedoucí práce)
Presented master’s thesis deals with the implementation of the Particle Induced X-ray Emission method in the experimental setup with the aim to supplement the family of ion beam based techniques, i.e. Rutherford Backscattering Spectrometry, Elastic Backscattering Spectrometry and Time-of-Flight/Energy Elastic Recoil Detection Analysis. The advantage of a multi-method approach is demonstrated on the transition metal alloy films containing light species, where the self-consistent analysis yields significantly improved and accurate information about stoichiometry, depth distribution and thickness of the alloy. Secondary Ion Mass Spectrometry is employed to compare and complement the obtained results.
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Complex ion beam based depth profiling of anticorrosive layers
Holeňák, Radek ; Král, Jaroslav (oponent) ; Bábor, Petr (vedoucí práce)
Presented master’s thesis deals with the implementation of the Particle Induced X-ray Emission method in the experimental setup with the aim to supplement the family of ion beam based techniques, i.e. Rutherford Backscattering Spectrometry, Elastic Backscattering Spectrometry and Time-of-Flight/Energy Elastic Recoil Detection Analysis. The advantage of a multi-method approach is demonstrated on the transition metal alloy films containing light species, where the self-consistent analysis yields significantly improved and accurate information about stoichiometry, depth distribution and thickness of the alloy. Secondary Ion Mass Spectrometry is employed to compare and complement the obtained results.
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Calibration and Exact Characterization of Aerosol Deposit colected by SDI Impactor
Havránek, Vladimír
Ion beam analytical methods as PIXE (Particle induced X-ray emission), PIGE (Particle induced gamma-ray emission) and RBS (Rutherford backscattering spectrometry) are frequently used for elemental analysis of different types of atmospheric aerosol samples in a form of aerosol deposits on thin plastic filters or foils (Alfassi and Peisach, 1991, Johansson and Campbell, 1988). An ideal sample for analysis is thin homogeneous aerosol deposit with known deposit area. However in practice such samples are rare. They are often thick (more than limit for thin target approximation i.e. larger then few hundred micrograms per square centimetres), of irregular shape and unknown deposit area. In such conditions all obtained elemental mass results should be corrected for apparent deposit thickness, deposit homogeneity and effective deposit area.
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Měření povrchových vrstev kombinací jaderných analytických metod
Peřina, Vratislav ; Macková, Anna ; Červená, Jarmila ; Havránek, Vladimír ; Voseček, Václav ; Hnatowicz, Vladimír ; Vacík, Jiří
Nedestruktivní jaderné metody umožňující hloubkově selektivní prvkové analýzy od desítek do tisíců nanometrů jsou využívány pro charakterizaci různých fyzikálně i technologicky zajímavých systémů a pro sledování chemických a fyzikálních jevů na povrchu pevných fází. Kombinace metod RBS, ERDA, NDP, PIXE a PIGE umožňuje určit a rozlišit lehké i těžké prvky.
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