18 research outputs found
Simultaneous measurements of the real and imaginary parts of the X-ray anomalous dispersion using X-ray inferometers
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Direct measurements of the complex-x-ray atomic scattering factors for elements by x-ray interferometry at the Daresbury synchrotron radiation source
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Band alignment in Ge/GeOx/HfOâ‚‚/TiOâ‚‚ heterojunctions as measured by hard X-ray photoelectron spectroscopy
No full textA high-throughput system for high-quality tomographic reconstruction of large datasets at Diamond Light Source
No full textDesign, simulation and testing of large area silicon drift detectors and detector array for X-ray spectroscopy
No full textLarge area (25 mm(2)) silicon drift detectors and detector arrays (5x5) have been designed, simulated, and fabricated for X-ray spectroscopy. On the anode side, the hexagonal drift detector was designed with self-biasing spiral cathode rings (p(+)) of fixed resistance between rings and with a grounded guard anode to separate surface current from the anode current. Two designs have been used for the P-side: symmetric self-biasing spiral cathode rings (p(+)) and a uniform backside p(+) implant. Only 3 to 5 electrodes are needed to bias the detector plus an anode for signal collection. With graded electrical potential, a sub-nanoamper anode current, and a very small anode capacitance, an initial FWHM of 1.3 keV, without optimization of all parameters, has been obtained for 5.9 keV Fe-55 X-ray at RT using a uniform backside detector
Design, simulation and testing of large area silicon drift detectors and detector array for X-ray spectroscopy
No full textLarge area (25 mm(2)) silicon drift detectors and detector arrays (5x5) have been designed, simulated, and fabricated for X-ray spectroscopy. On the anode side, the hexagonal drift detector was designed with self-biasing spiral cathode rings (p(+)) of fixed resistance between rings and with a grounded guard anode to separate surface current from the anode current. Two designs have been used for the P-side: symmetric self-biasing spiral cathode rings (p(+)) and a uniform backside p(+) implant. Only 3 to 5 electrodes are needed to bias the detector plus an anode for signal collection. With graded electrical potential, a sub-nanoamper anode current, and a very small anode capacitance, an initial FWHM of 1.3 keV, without optimization of all parameters, has been obtained for 5.9 keV Fe-55 X-ray at RT using a uniform backside detector
