Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"position-sensitive detector"”.
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Study of residual stress in a thin platinum layer by means of nondestructive x-ray diffraction
… a Bragg-Brentano focusing beam arrangement and a position sensitive detector. X-ray fluorescence scans were also performed on the sample in order to gain information about its composition. Additionally, a scanning-electron-microscope was used to investigate its microstructure. The crystallographic …
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Reciprocal space phase gradient neutron imaging
… has limitations in its resolution imposed by position sensitive detectors. The disadvantage, its limited resolution, of a position-sensitive detector can be overcome by replacing the conventional detector with an area detector and moving to reciprocal space. Reciprocal space imaging is …
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X-ray emission spectroscopic study of chloride solid compounds using synchrotron radiation
… and polarization dependence. A two-dimensional position-sensitive detector system with data acquisition software is developed for the spectrometer that allows collecting a complete x-ray emission spectrum simultaneously. Mechanical supports for detector mounting and a holder for solid samples …
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The design and performance of an x-ray emission spectrometer using the polarized Kalpha spectra of chlorine and potassium
… the resulting radiation with a resistive anode position sensitive detector; both of which are situated on a Rowland circle. A sample is fixed in position and located in the middle of the Rowland circle. The spectrometer can be positioned to detect fluorescence emitted at 0° and 90° with …
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Energy Distribution of Sputtered Neutral Atoms from a Multilayer Target
… of the energy distribution was achieved with a position-sensitive detector. The principle behind the detector's energy resolution is time of flight (TOF) spectroscopy. For this specific detector, programmed time intervals between the sputtering pulse at the target and the ionizing laser pulse …
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Towards molecular reconstruction in Coulomb explosion imaging
… in lens accelerates the charged ions towards a position-sensitive detector, and their arrivals are based on their charge per mass ratio. The ion with the highest ratio of charge per mass arrives first at the detector; its time-of-flight and position of impact on the detector by the ion is …
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Thermal vacancies and phase separation in bcc mixtures of helium-3 and helium-4
… lattice parameter. A new x-ray diffractometer-position sensitive detector system is used to make measurements of the absolute lattice parameter of the helium crystals with an accuracy of 300 ppm, and measurements of changes in lattice parameter to better than 60 ppm. The phase separation of the …
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Substrate curvature measurement system
… scanning capability to determine the true position of the laser beam without prior knowledge of the initial substrate curvature. A four-quadrant position sensitive detector (PSD) with relevant Lab View software and programs were also introduced into the system.
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High-resolution detectors for soft X-ray spectroscopy
… disperse X-rays scattered from a sample across a position sensitive detector, a Charge-Coupled Device (CCD). It has been recognised that the spatial resolution of the CCD currently limits the spectrometer resolution and therefore the investigations described in this thesis focus on developing and …
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Study of the $^{19}$F(p,$\alpha$)$^{16}$O reaction through the Trojan Horse Method and its astrophysical enviroment
… made up of an ionization chamber and a silicon position sensitive detector (PSD) on one side with respect to the beam direction and one additional PSD on the opposite side for coincident detection of the $\alpha$ particles. In the beginning of the experimental work, I described the reason …