Results 161 to 170 of about 41,954 (205)
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Investigation of energy dependence of EBT and EBT‐2 Gafchromic film
Medical Physics, 2010Purpose:The purpose of this study was to quantify the extent of energy dependence of Gafchromic film to x‐ray energies ranging in quality from 105 kVp to 6 MV, and relate this dependency to the film's chemical composition and date of production.Methods:Lots of Gafchromic EBT film manufactured in 2004 and 2005 together with more recent batches produced ...
Patricia, Lindsay +3 more
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Nuclear Instruments and Methods in Physics Research, 1983
Abstract The theory of unfavorable curvature-driven instabilities is developed for a plasma interacting with a hot electron ring whose drift frequencies are larger than the growth rates predicted from conventional magnetohydrodynamic theory. A Z-pinch model is used to emphasize the radial structure of the problem.
H.L. Berk +4 more
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Abstract The theory of unfavorable curvature-driven instabilities is developed for a plasma interacting with a hot electron ring whose drift frequencies are larger than the growth rates predicted from conventional magnetohydrodynamic theory. A Z-pinch model is used to emphasize the radial structure of the problem.
H.L. Berk +4 more
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Journal of Fusion Energy, 1981
The purposes of the workshop were (1) to evaluate the status of the current experimental and theoretical understanding of the hot electron ring properties, (2) to identify the dominant physical processes that influence ring formation and scaling and their optimal behavior, and (3) to determine critical areas for near-term research.
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The purposes of the workshop were (1) to evaluate the status of the current experimental and theoretical understanding of the hot electron ring properties, (2) to identify the dominant physical processes that influence ring formation and scaling and their optimal behavior, and (3) to determine critical areas for near-term research.
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Reaction of three UV exposure to gafchromic EBT-2 and EBT-3
2015Gafchromic films (GAFs) are used for the Xray dose measurement in the diagnostic examination. It is begun to use for the three-dimensional X-rays dose measurement using the high-resolution characteristic in computed tomography. However, it is necessary to solve a problem of unevenness of active layer of GAFs.
T. Katsuda +6 more
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Wertigkeit der Elektronenstrahl-Computertomographie (EBT)
RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren, 2004Electron beam tomography (EBT) has been scientifically evaluated to a much lesser degree for non-cardiac indications than for cardiac purposes. Therefore, four groups of investigators in Berlin (2), Mannheim and Munchen, which were supported by the Deutsche Forschungsgemeinschaft (DFG), included applications outside the heart in their evaluation of EBT
C N Enzweiler +14 more
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Gafchromic EBT film dosimetry in proton beams
Physics in Medicine and Biology, 2010The depth dose verification of active scanning proton beams is extremely time consuming with ion chamber measurements for beam data commissioning and patient specific measurements. With widespread use of Gafchromic EBT films, two-dimensional high-resolution dosimetry is explored in a uniform scanning proton beam.
Li, Zhao, Indra J, Das
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1996
Dieser Ubungsteil behandelt die Berechnung der Biegelinie und der Normal- und Schubflusverteilung in Staben bei Momenten- und Querkraftbelastung nach der EBT. Die theoretischen Grundlagen behandelt Kapitel 3.3.1 des Theorieteils ausfuhrlich.
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Dieser Ubungsteil behandelt die Berechnung der Biegelinie und der Normal- und Schubflusverteilung in Staben bei Momenten- und Querkraftbelastung nach der EBT. Die theoretischen Grundlagen behandelt Kapitel 3.3.1 des Theorieteils ausfuhrlich.
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IEEE Transactions on Magnetics, 1981
The Elmo Bumpy Torus fusion concept has been extrapolated to a 1,200-megawatt electrical power plant [1]. The toroidal magnets required will store more than 2,500 times the energy of those proposed for EBT-P [2]. EBT-reactor (EBT-R) magnets may each store 3.5 gigajoules of energy and weigh approximately 750,000 kg.
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The Elmo Bumpy Torus fusion concept has been extrapolated to a 1,200-megawatt electrical power plant [1]. The toroidal magnets required will store more than 2,500 times the energy of those proposed for EBT-P [2]. EBT-reactor (EBT-R) magnets may each store 3.5 gigajoules of energy and weigh approximately 750,000 kg.
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Stability of neoclassical EBT operating points
Nuclear Fusion, 1978A stability analysis of the neoclassical point model of EBT distinguishes the sign of the self-consistent radial ambipolar field for a given type of plasma profile. Positive electric fields correspond to normal plasma profiles (peaked at the centre) and negative electric fields correspond to inverted profiles (depressed at the centre).
J.B. McBride, A.L. Sulton
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