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IEEE Transactions on Nuclear Science

Issue 1 • Date Feb. 1969

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Displaying Results 1 - 25 of 73
  • [Front cover]

    Publication Year: 1969, Page(s): c1
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    Freely Available from IEEE
  • IEEE Nuclear Science Group

    Publication Year: 1969, Page(s): c2
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  • Table of contents

    Publication Year: 1969, Page(s):1 - 4
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  • Session Chairmen

    Publication Year: 1969, Page(s):5 - 6
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  • The Nucleus

    Publication Year: 1969, Page(s): 7
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  • Apollo over the Ganges an Agro-Industrial Complex for Increasing Food Production in India

    Publication Year: 1969, Page(s):9 - 18
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7474 KB)

    The geological origin of the vast alluvial Ganges plain is sketched as the filled-in foredeep of the Himalayan mountains. The prevalence offamine conditions there, in spite of the excellent soil and year-round growing season and good ground water supply, is noted. Prof. Stout's diagnosis in terms of the need for energy from external nonagricultural sources is set forth. An example employing a 1000... View full abstract»

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  • The Future of High Energy Accelerators

    Publication Year: 1969, Page(s):19 - 27
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    This paper begins with a review of those high energy accelerators which are now in operation. Accelerators under construction are discussed and very high energy machines, still far in the future, are listed and described. Possible uses of cryogenic and superconducting magnets are mentioned. Colliding beam projects in operation and planned are presented. High energy physics has become very expensiv... View full abstract»

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  • The Intense Neutron Generator and Future Factory Type Ion Accelerators

    Publication Year: 1969, Page(s):28 - 35
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1223 KB)

    A neutron factory is likely to sell its product in the form of isotopes. Today neutron factories are nuclear reactors. Ion accelerators may also produce isotopes by direct interaction and, at high enough energies, mesons and hyperons. The challenge of the electrical production of neutrons goes far beyond the isotope market. It challenges the two popular concepts for long term large scale energy, t... View full abstract»

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  • The Characteristics of an Ultra-High Resolution Ge(Li) Spectrometer for Singles and Coincidence X-Ray and Gamma-Ray Studies

    Publication Year: 1969, Page(s):36 - 46
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1729 KB)

    The use of an ultra-high resolution Ge(Li) photon spectrometer in low and high energy X-ray and gamma-ray measurements has been evaluated. Studies were made of the resolution, low energy cutoff, the full energy and K X-ray escape efficiencies, tha effective detector dead layer and the detector linearity. The detector was used simultaneously with a high resolution Si(Li) detector to measure fast co... View full abstract»

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  • Linearity and Resolution of Semiconductor Radiation Detectors

    Publication Year: 1969, Page(s):47 - 61
    Cited by:  Papers (4)
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    The energy linearity for Si(Li) and Ge(Li) has been measured and compared with theory. Good agreement was obtained for x-ray attenuation factors ¿md < 100 . The region of the germanium absorption edge was investigated and found to exhibit larger nonlinearities than predicted by the theory. The discrepancy is believed to be due to inefficient charge collection near the detector window leading to e... View full abstract»

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  • The Effects of Heat Treatments of Germanium on Resistivity, Photoconductive Decay and on Lithium Drift Properties

    Publication Year: 1969, Page(s):62 - 67
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (852 KB)

    The effects of heat treatments on resistivity, photoconductive decay and Lithium drift properties of p-type germanium single crystals have been investigated. We found that, in contrast to literature thermally produced acceptors cannot be reconverted if vacuum is used instead of a gas during "anneal" treatments. Vacuum heat treatments also lead to a stronger decrease of the photoconductive decay ti... View full abstract»

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  • Further Charge Collection Studies in Coaxial Ge(Li) Detectors

    Publication Year: 1969, Page(s):68 - 74
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (829 KB)

    Calculations have shown that, for comparable trapping lifetimes, the effect of charge trapping in a coaxial detector is significantly less for the carriers which move radially outward from the core than for those which move inward, as a consequence of the non-uniform electric field. This has been verified by resolution measurements on two thin coaxial detectors made from the same hole-trapping cry... View full abstract»

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  • A Well-Type Ge(Li) Detector

    Publication Year: 1969, Page(s):75 - 81
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (720 KB)

    The feasibility and usefulness of a coaxial Ge(Li) spectrometer as a well-type detector for sum spectra of coincident gamma rays is demonstrated. The value of the welltype geometry has previously been established in nuclear gamma spectroscopy with the use of (NaI(Tl) detectors. In this work a 16 cm3 hollow cylindrical germaniun detector has been made and mounted in such a way that access to the ce... View full abstract»

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  • Detection of Low Energy Heavy Particles with Silicon Barrier Detectors

    Publication Year: 1969, Page(s):82 - 86
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (818 KB)

    The performance characteristics of silicon surface barrier detectors have been investigated for detecting H+, He+, N+, Ne+ and Ar+ in the energy interval 6-100 keV. For a cryogenically cooled, 50 mm2, 1325¿ depletion depth detector the resolution for protons was 1.65 keV (FWHM). The resolution decreased as the particle mass increased being 6.5 keV for 40 keV Ar+. All particles exhibit pulse heigh... View full abstract»

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  • A Comparison of Various Filter and Discriminator Techniques on Timing with Ge(Li) Detectors

    Publication Year: 1969, Page(s):87 - 91
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (766 KB)

    An experimental examination of the effect of several filters and two discriminator techniques on the time measurement of the signals from coaxial Ge(Li) detectors is presented in this paper. The signal to the filters and discriminators was obtained from the output of the charge-sensitive preamplifier in order not to degrade the energy resolution of the system. The discriminators used were a level ... View full abstract»

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  • The Performance of High-Gain First-Dynode Photomultipliers

    Publication Year: 1969, Page(s):92 - 95
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1262 KB)

    The performance of photomultipliers having first dynodes of cesium-activated GaP with gains of from 30 to 50 is discussed. The resolution capabilities are high enough so that the pulse height distribution obtained from low intensity scintillations breaks up into separate peaks for one electron, two electrons, etc. This high resolution makes it possible to separate unwanted single electron dark pul... View full abstract»

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  • Instrumentation for Monitoring Current from a 30 MeV Electron Linac

    Publication Year: 1969, Page(s):96 - 102
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1389 KB)

    Non-intercepting monitors for measuring the total current or charge passing down the electron drift tubes have been constructed which are suitable for electron pulses from about 50 nanoseconds to 3.5 microseconds in width. Measurements are derived from output signals which are tuned to frequencies in the range 250 kcs to 45 kcs. Alternatively, for viewing pulse envelopes, ferrite coil outputs are ... View full abstract»

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  • Linac Beam Loss Detection System Using Self-Powered Detectors

    Publication Year: 1969, Page(s):103 - 106
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1849 KB)

    A beam loss detection system employing self-powered gamma detectors to monitor the radiation produced by stray beam has been installed on the 35 MeV linac. The system enables the operator to optimize machine and beam transport parameters to a precision not possible using conventional monitors alone. View full abstract»

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  • Spatial Sampling for Fast Single Events

    Publication Year: 1969, Page(s):107 - 113
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1637 KB)

    A method for observing non-recurrent events having short rise-time has been developed. Signals are sent to a transmission line where 50 sampling gates are tapped. A control pulse triggered by the incoming signal opens simultaneously all the linear gates. Successive tapping points are placed at 200 ps "distance" and the opening time of the gates is a little less. The full event is observed for a pe... View full abstract»

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  • On-Line Analysis of Wire Spark Chamber Data

    Publication Year: 1969, Page(s):114 - 121
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    By attaching a medium-sized computer (IBM 1800) on-line to a wire spark chamber system and using simple algorithms, it is possible to analyze all the events and thus have much improved capability of monitoring the experiment. This paper describes the information so obtained and how it can be used. View full abstract»

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  • MIDAS: A Multilevel Interactive Data Acquisition System

    Publication Year: 1969, Page(s):122 - 126
    Cited by:  Papers (1)
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    A system is described for using a medium scale computer in real time data acquisition, analysis, and control of high-energy physics experiments utilizing wire spark chambers. View full abstract»

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  • Computer Analysis of Tracks in Nuclear Emulsion Utilizing Digitized Video Scan

    Publication Year: 1969, Page(s):127 - 131
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (772 KB)

    A system has developed to make density measurements on particle tracks in nuclear emulsions. The output signal of a videcon viewing the track through a microscope is digitized to detect developed grains in the emulsion. This digitized information is transferred in real time to a computer which selects grains falling in the track and sums their volumes and computes parameters related to their spati... View full abstract»

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  • Evolution of a Computer System for Acquisition of Angular Correlation Data

    Publication Year: 1969, Page(s):132 - 135
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (819 KB)

    A system using an SEL 810A computer programmed as a flexible multi-parameter analyzer is described. Features include a time-shared ADC channel with software gain correction for each input, unrestricted selection of spectra on any 2 of 4 input parameters, and live display of coincidence spectra with chance coincidences subtracted. View full abstract»

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  • Data Acquisition Computer with Foreground-Background Operating System

    Publication Year: 1969, Page(s):136 - 141
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (920 KB)

    An on-line data acquisition computer system is described which runs background computational programs while it is acquiring data independently of and asynchronously with the program. A combination of hardware and software prevents loss of data and destruction of the system through errors in Fortran background programs. View full abstract»

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  • The Data Acquisition and Analysis Complex for the BNL Low Energy Accelerator Facility

    Publication Year: 1969, Page(s):142 - 144
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (443 KB)

    The Data Acquisition and Analysis Complex is based on an SDS Sigma-7 computer with special purpose hardware. This complex will be time-shared by users at four independent accelerators. Each user may perform computations or data analysis while simultaneously collecting data and displaying results. A special feature of this complex is that the displays, programs and data are maintained on disc memor... 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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