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in subjects: "N46130 --Instrumentation- -Radiation Detection Instruments--Nuclear Spectroscopic Instrumentation"  
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Direct x-ray response of self-scanning photodiode arrays

Description: Self-scanning photodiode arrays were tested for their ability to measure the spatial distribution of low-energy x rays in a wavelength-dispersive spectrometer. X-ray spectral sensitivity was measured with a calibrated dc source of nearly-monochromatic characteristic-x rays with photon energies in the range of 1.5 to 8 keV. Photodiode response was found to be linear with x-ray flux. Exposure to large doses of copper radiation did not affect sensitivity. A mathematical model that describes the ex… more
Date: August 13, 1975
Creator: Koppel, L. N.
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Partner: UNT Libraries Government Documents Department
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Alpha pulse height analysis of 32 samples simultaneously using a minicomputer

Description: From 19th annual analytical chemistry conference; Jackson Hole, Wyoming, USA (3 Sep 1973). An alpha spectroscopy system for analysis of environmental samples at Rocky Flats is described. The system consists of 16 silicon detectors and associated electronics (preamplifiers, amplifiers, multiplier/router, analog- to-digital convcrter, pulseheight analyzer) for input in a NOVA 1200 minicomputer with 24 K, 16 bit memory. Software is briefly discussed. (WHK)
Date: January 1, 1973
Creator: Allen, I. B. & West, J. R.
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Partner: UNT Libraries Government Documents Department
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Recent Advances with HgI$sub 2$ X-Ray Detectors

Description: From nuclear science symposium; San Francisco, California, USA (14 Nov 1973). HgI/sub 2/ x-ray detectors up to 16 mm/sup 3/ have been made from single crystals grown from the vapor phase. Crystal growth, detector fabrication, and transport properties are described. Resolutions of 850 eV FWHM at 5.9 keV and 4.3 keV FWHM at 122 keV have been measured at 25 deg C in air. (auth)
Date: November 1, 1973
Creator: Swierkowski, S. P.; Armantrout, G. A. & Wichner, R.
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Partner: UNT Libraries Government Documents Department
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Charged-particle magnetic-quadrupole spectrometer for neutron induced reactions

Description: A spectrometer has been developed for measuring the charged particle production cross sections and spectra in neutron-induced reactions. The spectrometer consists of a magnetic quadrupole doublet which focuses the charged particles onto a silicon surface barrier detector telescope which is 2 meters or more from the irradiated sample. Collimators, shielding, and the large source-to- detector distance reduce the background enough to use the spectrometer with a 14- MeV neutron source producing 4 .… more
Date: December 10, 1975
Creator: Haight, R. C.; Grimes, S. M.; Tuckey, B. J. & Anderson, J. D.
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Partner: UNT Libraries Government Documents Department
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