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Signal dispersion measurements on the gas detector volume of a dual-energy multimedia digital imaging sensor

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14 Author(s)
Giakos, G.C. ; Dept. of Electr. & Comput. Eng., Univ. of Akron, OH, USA ; Chowdhury, S. ; Shah, N. ; Guntupalli, S.
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In this study, experimental results on the signal dispersion of a gas detector volume of a multimedia imaging detector, operating on both gaseous and solid-state ionization principles, with specific emphasis on single X-ray exposure dual-energy radiography, are presented. The results of this study indicate that the gas detector volume of the multimedia detector technology exhibits excellent signal characteristics suitable for a large number of imaging applications. By focusing on the gas detector element, drift distance causes significant effects on both the amplitude and full-width at half maximum due to mobility dispersion and space-charge. An improved signal results with increasing gas pressure.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:52 ,  Issue: 5 )