Scintillation Spectrometer System for Measuring Fast-neutron Spectra in Beam Geometry
Title | Scintillation Spectrometer System for Measuring Fast-neutron Spectra in Beam Geometry PDF eBook |
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Release | 1977 |
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A high-energy liquid-organic scintillation spectrometer system is described. This spectrometer was developed to measure neutron spectra in extracted beams from zero-power fast reactors. The highly efficient NE-213 scintillation solution was used as the neutron detection medium. Identification and removal of gamma-ray-induced events was accomplished using electronic pulse shape discrimination. Instrumentation used to process the discrete pulses stemming from neutron and gamma-ray interactions, within the scintillation solution, is described in detail. Evaluation of the system's performance is discussed for a gamma-ray discrimination ratio of nominally 1000:1, a total countrate of 3000 cps, and a dynamic range corresponding to neutron energies from 1 to 10 MeV. Operation above 10 MeV is certainly possible. However, since the neutron flux above 10 MeV was negligible in the radiation fields of interest in this work, the operating characteristics of the spectrometer were not evaluated above 10 MeV. Neutron spectra are reported for extracted beam measurements made on ZPPR assembly 4, phase 2.
Using the Transportable, Computer-operated, Liquid-scintillator Fast-neutron Spectrometer System
Title | Using the Transportable, Computer-operated, Liquid-scintillator Fast-neutron Spectrometer System PDF eBook |
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Release | 1988 |
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When a detailed energy spectrum is needed for radiation-protection measurements from approximately 1 MeV up to several tens of MeV, organic-liquid scintillators make good neutron spectrometers. However, such a spectrometer requires a sophisticated electronics system and a computer to reduce the spectrum from the recorded data. Recently, we added a Nuclear Instrument Module (NIM) multichannel analyzer and a lap-top computer to the NIM electronics we have used for several years. The result is a transportable fast-neutron spectrometer system. The computer was programmed to guide the user through setting up the system, calibrating the spectrometer, measuring the spectrum, and reducing the data. Measurements can be made over three energy ranges, 0.6--2 MeV, 1.1--8 MeV, or 1.6--16 MeV, with the spectrum presented in 0.1-MeV increments. Results can be stored on a disk, presented in a table, and shown in graphical form. 5 refs., 51 figs.
Scientific and Technical Aerospace Reports
Title | Scientific and Technical Aerospace Reports PDF eBook |
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Pages | 1008 |
Release | 1978 |
Genre | Aeronautics |
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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
A Fast Neutron Scintillation Spectrometer
Title | A Fast Neutron Scintillation Spectrometer PDF eBook |
Author | James Edward Draper |
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Pages | 236 |
Release | 1952 |
Genre | Neutrons |
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Nuclear Science Abstracts
Title | Nuclear Science Abstracts PDF eBook |
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Pages | 764 |
Release | 1975 |
Genre | Nuclear energy |
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Energy Research Abstracts
Title | Energy Research Abstracts PDF eBook |
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Pages | 548 |
Release | 1978 |
Genre | Power resources |
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A 3He-gas Scintillation Spectrometer for Fusion Neutron Measurement
Title | A 3He-gas Scintillation Spectrometer for Fusion Neutron Measurement PDF eBook |
Author | Mark Steven Derzon |
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Pages | 344 |
Release | 1986 |
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