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IEEE Transactions on Nuclear Science

Issue 1 • Date Feb. 1965

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Displaying Results 1 - 25 of 80
  • [Front cover]

    Publication Year: 1965, Page(s): c1
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  • IEEE Nuclear Science Group

    Publication Year: 1965, Page(s): c2
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  • Table of contents

    Publication Year: 1965, Page(s):i - iii
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  • Snapshots at the Philadelphia Meeting

    Publication Year: 1965, Page(s): iv
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  • The Nucleus

    Publication Year: 1965, Page(s): v
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  • Coming Events

    Publication Year: 1965, Page(s): v
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  • Summary

    Publication Year: 1965, Page(s): vii
    Cited by:  Papers (1)
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  • Homer E. Newell

    Publication Year: 1965, Page(s): viii
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  • Leading from Strength

    Publication Year: 1965, Page(s):1 - 7
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  • Research within the Ionosphere

    Publication Year: 1965, Page(s):8 - 9
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    Explanation of recent rocket and satellite results requires considerable modification to the theories of formation of the various subdivisions of the ionosphere which evolved from ground-based studies. It was not until quite recently that the difficult task of measuring D region (50-85 km) electron densities from rockets was consummated. Flights made during sunspot minimum in the absence of solar ... View full abstract»

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  • Recent Results concerning Interplanetary Plasma

    Publication Year: 1965, Page(s): 10
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    The MIT plasma probe, installed aboard the first IMP, has shown that the space around the earth is sharply divided into three regions. At large distances from the earth, we find a region (region 1) occupied by a plasma moving with a velocity from about 300 to 400 km/sec, in a direction nearly radial away from the sun; its thermal energy density is small compared with its kinetic energy density of ... View full abstract»

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  • Cosmic Rays in Space

    Publication Year: 1965, Page(s):10 - 11
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    The energetic particle populations observed in the MeV and greater range in interplanetary space are of both galactic and solar origin. The galactic cosmic rays are ever present though strongly modulated by solar activity while the solar cosmic rays are highly variable. Of particular interest in attempting to assess the radiation hazards for long missions is a more detailed knowledge of the charge... View full abstract»

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  • Coronal Expansion and Particle Propagation through the Planetary Space

    Publication Year: 1965, Page(s): 12
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    This paper has been published as "Coronal Expansion and Solar Corpuscular Radiation," Planetary and Space Science, Vol. 12, pp. 451-461, 1964 (Pergamon Press). Significant information about the corpuscular radiation from the sun was deduced from studies of the aurora, magnetic storm phenomena, variation of intensity of galactic cosmic rays, etc. before satellite observations were available. In the... View full abstract»

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  • X-Ray Astronomy

    Publication Year: 1965, Page(s): 12
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    This paper reviewed X-ray data that have been recently accumulated by space instruments and described a most remarkable experiment relating to X-ray emission from the Crab Nebula. This nebula is the remnant of a supernova explosion in the year 1054 AD. The question was whether the X-radiation eminated from a point source, indicating possibly an invisible neutron star, or from a more diffuse source... View full abstract»

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  • Background in Liquid Scintillation Counting Systems

    Publication Year: 1965, Page(s):13 - 15
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    This paper gives estimates, for a particular radiocarbon dating system, of two possible sources of residual background occurring in coincident liquid scintillation arrangements - the natural radioactivity of the phototubes and optical feedback between them. The formr was found to contribute about 1.8 c.p.m. or 13% of the background, but there was no evidence of any significant contribution from th... View full abstract»

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  • Gain vs Temperature Effects in Nal(Tl) Photomultiplier Scintillation Detectors Using 10 and 14 Stage Tubes

    Publication Year: 1965, Page(s):16 - 23
    Cited by:  Papers (2)
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    The manner in which the gain of a radiation transducer comprised of a 2" × 2" NaI(Tl) crystal, and either a 5-inch 10-stage or 2-inch 14-stage photomultiplier tube viewing a Cs137 source, varies with ambient temperature changes over the range of 0° C to 50° C has been investigated. Gain vs temperature response curves are presented and operating temperatures which minimize gain variations are de... View full abstract»

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  • Apparatus for Precise Measurement of Scintillator Decay Times

    Publication Year: 1965, Page(s):24 - 27
    Cited by:  Papers (12)
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    A digital system has been built for making precise measurements of scintillator decay times. The approach used is similar to the one developed by Bollinger and Thomas. Time intervals between the start of a gamma-induced scintillation and the detection of a single light photon are measured with a time-to-height converter and stored in a pulse height analyzer. The apparatus has a time resolution of ... View full abstract»

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  • Evaluation of Organometallic Compounds for Gamma Detection in Plastic Scintillators

    Publication Year: 1965, Page(s):28 - 33
    Cited by:  Papers (3)
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    A series of copolymer of vinyl toluene containing various organometallic compounds have recently been synthesized. By taking advantage of the weak fluorescent characteristics of the organometallic compounds and the better understanding of the energy transfer and quenching process (J. Phys. Chem. 68:300 (1964)), it is possible to prepare organometallic scintillation plastics that may be useful for ... View full abstract»

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  • Low Energy Charged Particle Detection using the Continuous Channel Electron Multiplier

    Publication Year: 1965, Page(s):34 - 38
    Cited by:  Papers (9)
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    It has been found to be possible to operate the continuous channel electron multiplier, a recently developed type of windowless electron multiplier, in a gain saturated mode such than single charged particles entering the input mouth of the channel will initiate output pulses whose amplitude and shape are both uniform and independent of the character of the excitation radiation. By suitable design... View full abstract»

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  • Evaluation of New Photomultipliers for Scintillation Counting

    Publication Year: 1965, Page(s):39 - 45
    Cited by:  Papers (5)
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    This paper presents a comprehensive evaluation of a new bi-alkaliphotocathode photomultiplier developed specifically for scintillation counting. This recently developed photomultiplier is compared to existing photomultiplier types, and data are presented showing photocathode quantum efficiency as a function of wavelength, pulse-height resolution for Cs137 and Fe55, dark-noise spectra at 25 C and -... View full abstract»

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  • Low Power Fast Pulse Circuit Techniques in the MIT Gamma-Ray Telescope

    Publication Year: 1965, Page(s):46 - 53
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    Usually, circuits for handling fast pulses are designed at low impedance levels and hence operate with relatively high power consumption. In the electronics instrumentation of the MIT Gamma-Ray Telescope, the analog portion of the electronics, which must respond to input pulses as short as 3 ns and which contains about 430 transistors, operates with a power requirement of 350 mw. The entire electr... View full abstract»

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  • X-Ray Telescope for an Orbiting Solar Observatory

    Publication Year: 1965, Page(s):54 - 65
    Cited by:  Papers (5)
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    The X-ray experiment described here was designed to monitor the intensity, energy distribution, and time variations of solar X-rays, and to measure the intensity and angular distribution of X-rays over the celestial sphere. The detector, which operates between about 7 to 200 Kev, will also monitor local effects due to cosmic rays, trapped particles, and albedo gamma rays The telescope consisted of... View full abstract»

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  • Pulse Height Analyzer with Internal Storage for Space Use

    Publication Year: 1965, Page(s):66 - 82
    Cited by:  Papers (2)
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    A pulse height analyzer has been designed for space use which is able to handle input count rates in excess of 5 X 104 counts per second with low power consumption and very small size. It can operate in the temperature range of -15 to + 70°C and survive storage temperature from -55 to + 125°C. A parallel-serial, coincident current, wide-temperature-range, ferrite core memory of 256 channels, 16 ... View full abstract»

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  • Multichannel Spectrometer for the Measurement of Trapped Particles

    Publication Year: 1965, Page(s):83 - 88
    Cited by:  Papers (3)
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    A spectrometer has been designed to measure in detail the energy spectrum and omnidirectional flux of energetic charged particles encountered in low-altitude satellite orbits. Two versions of the instrument are described. Each detects particles in a solid angle which approaches 2¿ steradians and utilizes a plastic scintillator and photomultiplier combination. In each case the energy spectrum is o... View full abstract»

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  • Airborne Scan-Converter System

    Publication Year: 1965, Page(s):89 - 102
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    A method of converting very high bandwidth, single-transient information in a rocket-borne experiment to a much lower bandwidth is described. Application of the scan conversion technique to single-transient information of nanosecond rise time permits conversion to bandwidths commensurate with present day telemetry systems. Signal-storage rise time capability is 1 to 10 ns depending on the type of ... 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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