Author: Publisher: ISBN: Category : Languages : en Pages : 20
Book Description
High pressure xenon ionization chamber detectors are possible alternatives to traditional thallium doped sodium iodide (NaI(Tl)) and hyperpure germanium as gamma spectrometers in certain applications. Xenon detectors incorporating a Frisch grid exhibit energy resolutions comparable to cadmium/zinc/telluride (CZT) (e.g. 2% @ 662keV) but with far greater sensitive volumes. The Frisch grid reduces the position dependence of the anode pulse risetimes, but it also increases the detector vibration sensitivity, anode capacitance, voltage requirements and mechanical complexity. We have been investigating the possibility of eliminating the grid electrode in high-pressure xenon detectors and preserving the high energy resolution using electronic risetime compensation methods. A two-electrode cylindrical high pressure xenon gamma detector coupled to time-to-amplitude conversion electronics was used to characterize the pulse rise time of deposited gamma photons. Time discrimination was used to characterize the pulse rise time versus photo peak position and resolution. These data were collected to investigate the effect of pulse rise time compensation on resolution and efficiency.
Author: Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Ex situ analysis to characterize subsurface media for gamma-emitting radionuclides is time-consuming and costly. A Site Characterization and Analysis Penetrometer System (SCAPS) spectral gamma penetrometer probe was designed using newly developed small-diameter high-pressure xenon gas gamma ray detector technology for the in situ speciation (identification) and quantification of subsurface gamma-emitting contaminants. This report documents the design calibration laboratory studies and functionality field demonstration conducted to characterize the capabilities and limitations of the xenon spectral gamma probe. Results and comparative analysis of side-by-side simultaneous laboratory investigation/evaluation studies using SCAPS xenon spectral gamma and sodium iodine spectral gamma probes are also documented.
Author: United States. Energy Research and Development Administration. Technical Information Center Publisher: ISBN: Category : Force and energy Languages : en Pages : 1066
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Author: Clair J. Sullivan
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Author: Atomic Energy of Canada Limited
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Author: E. Sakai
Author: United States. Energy Research and Development Administration. Technical Information Center
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