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Electron avalanches in liquid argon mixtures

Description: We have observed stable avalanche gain in liquid argon when mixed with small amounts of xenon in the high electric field (>7 MV/cm) near the point of a chemically etched needle in a point-plane geometry. We identify two gain mechanisms, one pressure dependent, and the other independent of the applied pressure. We conclude that the pressure dependent signals are from avalanche gain in gas bubbles at the tip of the needle, while the pressure independent pulses are from avalanche gain in liquid… more
Date: March 19, 2004
Creator: Kim, J. G.; Dardin, S. M.; Kadel, R. W.; Kadyk, J. A.; Wenzel, W. B. & Peskov, V.
Partner: UNT Libraries Government Documents Department
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Neutron and Charged-Particle Induced Cross Sections for Radiochemistry in the Region of Bromine and Krypton

Description: We have developed a set of modeled nuclear reaction cross sections for use in radiochemical diagnostics. Systematics for the input parameters required by the Hauser-Feshbach statistical model were developed and used to calculate neutron and proton induced nuclear reaction cross sections in the mass region of bromine and krypton (34 {le} Z {le} 37, 40 {le} N {le} 47).
Date: July 23, 2004
Creator: Hoffman, R. D.; Dietrich, F. S.; Bauer, R.; Kelley, K. & Mustafa, M.
Partner: UNT Libraries Government Documents Department
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