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ASTM E803

1991 Edition, May 15, 1991

Complete Document

Standard Test Method for Determining the L/D Ratio of Neutron Radiography Beams

Includes all amendments and changes through Reapproval Notice , 2013


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Product Details:

  • Revision: 1991 Edition, May 15, 1991
  • Published Date: January 2013
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 7
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

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.