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IRE Transactions on Nuclear Science

Issue 3 • Date Dec. 1958

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Displaying Results 1 - 25 of 38
  • [Front cover]

    Publication Year: 1958, Page(s): c1
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    Freely Available from IEEE
  • IRE Professional Group on Nuclear Science

    Publication Year: 1958, Page(s): c2
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  • Table of contents

    Publication Year: 1958, Page(s): 75
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  • Introduction

    Publication Year: 1958, Page(s): 76
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  • Cerenkov Counters in High Energy Physics

    Publication Year: 1958, Page(s):77 - 81
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    Cerenkov counters as particle detectors in high energy physics experiments are discussed with emphasis on the practical design of velocity-sensitive devices. The performance and problems associated with three types of detectors are considered: simple velocity threshold counters and wide-band and narrow-band velocity selectors. The limitation in resolution of practical velocity-sensitive counters i... View full abstract»

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  • Further Work with Noble Element Scintillators

    Publication Year: 1958, Page(s):81 - 87
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2046 KB)

    An investigation of the relative scintillation efficiencies of the various noble gas mixtures has been made in an attempt to find a combination that would yield either more light than any of the pure gases or allow a more economical use of the heavier gases without substantial loss of light. Data on the efficiency of all binary mixtures of Xe, Kr, A, Ne, and He are presented. They show a character... View full abstract»

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  • Heavy Elements in Plastic Scintillators

    Publication Year: 1958, Page(s):87 - 90
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3078 KB)

    The objective of this work is to study the possibilities of incorporating into plastic scintillators substantial quantities of heavy element compounds without the introduction of appreciable color or haze. Factors governing the quenching of the light output are considered, and a practical balance is struck between lowered pulse height and the quantity of heavy element introduced. The various compo... View full abstract»

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  • Fundamental Studies of Scintillation Phenomena in NaI

    Publication Year: 1958, Page(s):90 - 92
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1583 KB)

    Work on pure NaI reported at the Fifth Scintillation Counter Symposium (1956) has been extended using crystals of higher purity at temperatures down to 4°K. Decay of the light pulse from unactivated NaI is not a simple exponential but exhibits a rising component superimposed on an exponential decay. In other measurements, the absolute conversion efficiency (emitted useful light divided by excitin... View full abstract»

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  • Glass Scintillators

    Publication Year: 1958, Page(s):92 - 95
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1119 KB)

    The preparation of scintillating glasses is currently being studied with principal emphasis on the use of cerium as an activator. The most efficient material investigated to date is a cerium activated high silica glass prepared originally by the Corning Glass Company. The pulse height of this material has been found to be as high as 10 per cent that of NaI(Tl), but its efficiency is dependent upon... View full abstract»

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  • Inelastic Nuclear Reactions of Protons in Scintillators

    Publication Year: 1958, Page(s):95 - 98
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (949 KB)

    When a scintillation counter is used as a spectrometer for energetic protons, corrections must be made for the fact that (p,n) and other nuclear reactions may occur in the scintillator, causing some of the protons to register substandard pulse heights. These corrections have been measured for thalliated sodium iodide, and for plastic scintillators at proton energies between 10 and 40 mev, by measu... View full abstract»

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  • Design of Photomultipliers for the Sub-Millimicrosecond Region

    Publication Year: 1958, Page(s):98 - 104
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2322 KB)

    In considering the design of a photomultiplier with good time resolution characteristics, it is convenient to divide the problem into two parts, one dealing with the photocathode-to-first dynode region, the other with the secondary emission multiplier structure. The two principal causes of poor time resolution in both of these parts are: 1) the different path lengths of electrons originating from ... View full abstract»

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  • New Techniques in Low Level Fluoroscopy

    Publication Year: 1958, Page(s):104 - 109
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2780 KB)

    In recent years a great deal of attention has been paid to the dangers of high X-ray dosage during fluoroscopic examination of a patient. A number of electronic devices have been put forth in an attempt to allow fluoroscopic image intensification and a consequent decrease in the required dosage. The purpose of this paper is to outline briefly the principles on which these devices work. The discuss... View full abstract»

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  • Fatigue in Photomultipliers

    Publication Year: 1958, Page(s):109 - 114
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1947 KB)

    The change of gain with time of two types of dynodes used in photomultipliers has been studied at several current levels and under repeated fatigue cycles. The fatigue of the photomultiplier takes place predominantly in the last few dynodes; The magnitudes and time dependence of the fatigue vary with dynode current, temperature, construction, and past history. View full abstract»

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  • Status of Multiplier-Phototube Development for Scintillation Counters

    Publication Year: 1958, Page(s):114 - 117
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1586 KB)

    A number of recent developments have contributed to the design of multiplier phototubes having improved time discrimination, as well as improved pulse-height resolution. In the 6810-A, a modified version of the first commercial high-gain, high-speed tube, a curved faceplate (flat on the outside) is used to reduce transit-time variations in the region between the photocathode and the first dynode. ... View full abstract»

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  • Special Purpose Multiplier Phototubes for Scintillation Counting

    Publication Year: 1958, Page(s):117 - 120
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    A discussion on linear and box-type multiplier phototubes is presented. Various aspects of dynode geometry and front end design of the Du Mont linear type multiplier structure in regard to transit time and transit-time spread are discussed. Several methods of operation of the front end of a multiplier phototube are considered in order to determine the optimum conditions for collection efficiency a... View full abstract»

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  • Recent Work on Photoemission and Dark Emission Problems

    Publication Year: 1958, Page(s):120 - 124
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3066 KB)

    Recent developments have resulted in multiplier phototubes having wider spectral responses from the ultraviolet to the infrared, having higher absolute sensitivity, and having lower dark emission. The multialkali photocathode discovered by Sommer is now being used in the development type multiplier phototube, C7237. Despite the very high red sensitivity of this cathode, the dark emission is a fact... View full abstract»

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  • A High Current Coaxial Photomultiplier

    Publication Year: 1958, Page(s):124 - 126
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1362 KB)

    A photomultiplier structure capable of high current output and relatively fast rise time has been developed and several prototypes have been built. The design incorporates eight separate photocathode elements spaced around the cylindrical structure. A five or six-stage multiplier focuses the electrons onto a central coaxial collector-output structure matched directly to a coaxial line. Each stage ... View full abstract»

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  • Response Functions of Total-Absorption Spectrometers

    Publication Year: 1958, Page(s):127 - 137
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2821 KB)

    The characteristic shapes of the response functions of a sodium iodide scintillation spectrometer determine the potential of the spectrometer for X or gamma-ray spectroscopy. The present report reviews the evaluation of these functions for monoenergetic X rays and the limitations placed by this evaluation on the quality of the results for various applications. Emphasis is given to theoretical and ... View full abstract»

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  • Analysis of Gamma Ray Scintillation Spectra for Quantitative Photon Intensities

    Publication Year: 1958, Page(s):138 - 146
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4309 KB)

    The various considerations necessary for conversion of the pulse height spectrum from NaI(Tl) spectrometers to photon intensity distributions are discussed. Some of these are: 1) resolution and efficiency of the crystal; 2) summing of cascade gamma rays; 3) source geometry and self-absorption; and 4) handling of positron emitters. A straightforward empirical method for subtracting the Compton dist... View full abstract»

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  • Measurement of Time of Flight in the Millimicrosecond Region

    Publication Year: 1958, Page(s):146 - 152
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3865 KB)

    The Hanford system for measurement of neutron time of flight differs from conventional techniques only in the use of a vernier chronotron for time interval measurements. The chronotron consists of two circulating transmission lines with a single fast coincidence circuit between them. The line lengths are adjusted to give slightly different circulation periods. By counting the number of circulation... View full abstract»

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  • A Sodium Iodide (Tl) Total Absorption Spectrometer for High Energies

    Publication Year: 1958, Page(s):152 - 155
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    A scintillation counter employing a 70-lb NaI(Tl) crystal and a Swiss (AfiF) multiplier phototube has been tested with electrons of energy up to 600 mev. The plot of pulse height vs energy of incident electrons is found to be linear up to the highest energy tested (600 mev). Energy resolution of 16 per cent has been obtained at 350 mev. The crystal is 9 1/2 inches both in diameter and length. The ... View full abstract»

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  • Unscrambling of Gamma-Ray Scintillation Spectrometer Pulse-Height Distributions

    Publication Year: 1958, Page(s):156 - 158
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (740 KB)

    This paper describes the construction of a matrix expressing the response of a large sodium iodide crystal to axially incident 0.01 to 8-mev gamma rays. Interpolation from measured and calculated pulse-height distributions due to monoergic sources yielded a series of distributions at source-energy intervals uniform in the square root of energy. Each distribution was normalized to the total detecti... View full abstract»

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  • Use of Li6I(Eu) as a Fast-Neutron Detector and Spectrometer

    Publication Year: 1958, Page(s):159 - 161
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1444 KB)

    A review is given of experiments carried out in an investigation of the scintillation response of Li6I(Eu) to fast neutrons. A considerable improvement in fast-neutron resolution is realized by operation of the crystal at low temperatures. Pulse-height spectra have been recorded for neutrons from various sources providing both line spectra and continuous spectra. These experiments indicate possibl... View full abstract»

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  • Scintillation Counting in Experiments on Parity Conservation

    Publication Year: 1958, Page(s):161 - 166
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    The scintillation counter has played a key role in many of the recent experiments pertaining to the conservation of parity and other symmetry principles in weak interactions. Although in many instances the development of the techniques of scintillation counting, per se, has been limited, the applications to which these techniques have been put are sufficiently novel to warrant a general review of ... View full abstract»

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  • Applications of Liquid Scintillation Counters

    Publication Year: 1958, Page(s):166 - 170
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    The liquid scintillator, in just a few years of development, has shown itself to be an extremely versatile chemical system for radiation detection. Its evolution has been characterized by penetration into almost every phase of experimental science. A survey of the most notable applications of liquid scintillation counting is presented. View full abstract»

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Aims & Scope

This Transactions ceased production in 1962. The current retitled publication is IEEE Transactions on Nuclear Science.

Full Aims & Scope