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Nuclear Science, IEEE Transactions on

Issue 5 • Date Oct 2000

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  • Principal components analysis of multienergy X-ray computed tomography of mineral samples

    Publication Year: 2000 , Page(s): 1729 - 1736
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (380 KB)  

    Principal components analysis (PCA) of X-ray transmission tomography images made at several different energies can produce images that allow individual materials to be distinguished more clearly than in single-energy images. Computer simulations and tests on a five-band mineral data set demonstrate the application of PCA View full abstract»

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  • Proton SEU cross sections derived from heavy-ion test data

    Publication Year: 2000 , Page(s): 1713 - 1728
    Cited by:  Papers (33)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (284 KB)  

    Many papers have presented models for estimating proton single event upset (SEU) cross sections from heavy-ion test data, but all rigorous treatments to date are based on the sensitive volume (SV) model for charge collection. Computer simulations have already shown that, excluding devices utilizing physical boundaries for isolation, there is no well-defined SV. A more versatile description of charge collection, which includes the SV model as a special case, utilizes a charge-collection efficiency function that measures the effect that the location of ionization has on collected charge. This paper presents the first rigorous analysis that uses a generic charge collection efficiency function to relate proton to heavy-ion cross sections. The most practical result is an upper bound for proton SEU or single event latchup (SEL) cross sections, which requires no information about the charge-collection efficiency function, except that it exists. In addition, some models previously presented by others are reproduced (or, in one case, extended) by applying the general theory to special cases. The similarities and differences between a variety of models become clear when the models are recognized to be special cases or variations of this general theory View full abstract»

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Aims & Scope

IEEE Transactions on Nuclear Science focuses on all aspects of the theory and applications of nuclear science and engineering, including instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.

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