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About This Item
Full Description
1.1 This test method defines an empirical technique for the measurement of the effective collimation ratio, L/D, of neutron radiography beams. The technique is based upon analysis of a neutron radiographic image and is independent of measurements and calculations based on physical dimensions of the collimator system. The values derived by this technique should be more accurate than those based on physical measurements, particularly for poorly defined apertures.
Document History
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ASTM E803-20
Standard Test Method for Determining the L/D Ratio of Neutron Radiography Beams- Most Recent
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ASTM E803-17
Standard Test Method for Determining the L/D Ratio of Neutron Radiography Beams- Historical Version
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ASTM E803-91(2013)
viewing
Standard Test Method for Determining the L/D Ratio of Neutron Radiography Beams- Historical Version
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ASTM E803-91(2008)
Standard Test Method for Determining the L/D Ratio of Neutron Radiography Beams- Historical Version
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ASTM E803-91(2002)
Standard Test Method for Determining the L/D Ratio of Neutron Radiography Beams- Historical Version
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ASTM E803-91
Standard Test Method for Determining the L/D Ratio of Neutron Radiography Beams- Historical Version