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Nuclear Science, IEEE Transactions on

Issue 5 • Date Oct. 1966

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Displaying Results 1 - 15 of 15
  • Table of contents

    Page(s): c1
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  • IEEE Nuclear Science Group

    Page(s): c2
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  • The Nucleus

    Page(s): 1
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  • Experience with On-Line Bubble Chamber Measuring Machines

    Page(s): 2 - 5
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    About four-thousand events have now been measured at ANL using three measuring machines, each equipped with a small Recomp II computer. The computer has a 4K memory of 40 bit words and has floating point hardware. The computer guides and, in a sense, watches over the measurer, performing many elementary checks of the measuring process. A space reconstruction is not attempted, but sufficient checks are made to eliminate most mistakes and inaccuracies which would later cause failures during the reconstruction process. View full abstract»

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  • A Versatile Fail-Safe Trip Circuit for Reactor Safety Systems

    Page(s): 6 - 7
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    A transistorized trip circuit is described which employs a simple self-testing technique to achieve a high degree of fail-safeness with a minimum number of components. It operates with d-c input currents in the range from 10 to 100 microamperes and can control up to 100 watts of load power. The trip differential for a load change from full power to zero power is less than 0.1 microampere; and the temperature stability of the trip point is better than 0.02 a/°C. This trip circuit may be used with either relay or solid-state logic and power switching circuits. View full abstract»

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  • Reactor and Linear Accelerator Induced Effects in Dielectrics

    Page(s): 8 - 21
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    The currents induced by nuclear radiation from a pulsed reactor on several commercial capacitors are compared with those induced by the electron beam of a linear accelerator (LINAC) source. Dependence of the radiation induced current on applied voltage, geometry, dose, and dose rate is contrasted for Mylar*, polystyrene, mica, tantalum, glass, and ceramic capacitors. These effects are analyzed in terms of models appropriate for the various capacitors, and values of parameters defining these relationships are given. The relative effectiveness of neutron and gamma radiation in producing induced currents in these capacitive elements at the reactor environment was also obtained. View full abstract»

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  • Characteristics of an Alpha Particle Positive Point to Plane Corona-Streamer Counter in Air

    Page(s): 22 - 24
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    Operational alpha counting characteristics have been obtained for a point-plane counter in air working in the corona-streamer mode. Hemispherically capped wires and rods were used as anodes having diameters 1.0 mm - 3.5 mm and spaced 0.6 cm - 2.0 cm from a flat polished tungsten cathode. View full abstract»

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  • An Electrometer for Use in Scientific Space Instruments

    Page(s): 25 - 36
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    A wide-range vibrating-reed electrometer that obtained extensive detailed data on the "solar wind" during the Mariner II flight to Venus is described. This circuit used an inverting carrier-type dc amplifier with a logarithmic diode as its principal feedback element and represented the first successful application of a space-qualified dynamic capacitor electrometer. This system also represents one of the earliest all-semiconductor amplifiers to be used in a dynamic capacitor electrometer. The wide dynamic range of the application (10-13 to 10-6 A) required the stabilization of a closed loop having 7 decades of continuous variation in the dynamic resistance of the primary feedback element. Some details of design, analysis, and performance associated with the electrometer amplifier and its feedback system are presented. View full abstract»

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  • An Analysis of Non-Uniform Proton Irradiation Damage in Silicon Solar Cells

    Page(s): 37 - 46
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    Experimental data obtained on the degradation of the short-circuit current in 1-ohm-cm N/P silicon solar cells irradiated by low-energy, 0.1-3.0 MeV, protons were analyzed with the aid of an N-layer solar-cell model. The results show that the damage constant, K(Ep), rises less rapidly with decreasing proton energy, Ep, than it does at higher proton energies. The derived damage law can be analytically described as follows: K(Ep) = Ep ¿ E1 =.962 MeV E1 ¿ Ep =2.98 MeV where K0 = 1.92 × 10-5 p-1 C1 = 1.08 MeV-1 C2 = 0.85 This representation has been found adequate for incident proton energies of 0.5, 1, and 3 MeV and definitive for Ep ¿ 0.1 MeV. The value of Ko listed should be considered as representative only of the particular solar cells analyzed. View full abstract»

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  • Contributors

    Page(s): 47 - 49
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  • Correction [to "The mechanism of channel electron multiplcation"]

    Page(s): 49
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    Summary form only given, as follows. The authors of the paper "The mechanism of channel electron multiplcation," which appeared on pages 88-99 of the June 1966, issue of these Transactions note that the subheading 'Saturation in curved channels' on page 89 should be transposed with 'Saturation in Straight Channels," on page 90. View full abstract»

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  • Some High Voltage Pulse Techniques in Use at Argonne

    Page(s): 50 - 53
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    Instrumentation requirements at Argonne have necessitated the development of circuits capable of delivering megawatt-level pulses into various types of loads. The allowed delay time between the command signal and the output pulse has ranged from a few nanoseconds to a few microseconds and the allowed time jitter has generally been in the low nanosecond region. This report will consider some of the components and circuits and some of the system design concepts in current use at Argonne for high voltage-high current pulse instrumentation. View full abstract»

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  • Radiation Detectors in High Energy Physics

    Page(s): 54 - 59
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    Radiation detectors extensively used in high energy physics are briefly reviewed. Applications are discussed, together with remarks on light collection efficiency of various light pipes, ¿erenkov counters, time-of-flight techniques, and use of integrated circuits. Finally, several new types of detectors are mentioned which may be suitable for identification of particles at very high energies (hundreds of BeV). View full abstract»

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  • Information for authors

    Page(s): 59a
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  • Affiliate Plan of the IEEE Nuclear Science Group

    Page(s): 59-b
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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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