A system for fast neutron radiography
- Engineering Division, Argonne National Laboratory, Post Office Box 2528, Idaho Falls, Idaho 83403-2528 (United States)
A system has been designed and a neutron generator installed to perform fast neutron radiography. With this system, objects as small as a coin and as large as a 19 liter container have been radiographed. The neutron source is an MF Physics A-711 neutron generator which produces 3{times}10{sup 10}neutrons/second with an average energy of 14.5 MeV. The radiography system uses x-ray scintillation screens and film in commercially available light-tight cassettes. The cassettes have been modified to include a thin sheet of plastic to produce protons from the neutron beam through elastic scattering from hydrogen and other low Z materials in the plastic. For film densities from 1.8 to 3.0, exposures range from 1.9{times}10{sup 7}n/cm{sup 2} to 3.8{times}10{sup 8}n/cm{sup 2} depending on the type of screen and film. The optimum source-to-film distance was found to be 150 cm. At this distance, the geometric unsharpness was determined to be approximately 2.2{endash}2.3 mm (or 8.7{endash}9.1{percent} of the object size) and the smallest hole that could be resolved in a 1.25 cm thick sample had a diameter of 0.079 cm. {copyright} {ital 1997 American Institute of Physics.}
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 580097
- Report Number(s):
- CONF-961110--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 392; ISSN 0094-243X; ISSN APCPCS
- Country of Publication:
- United States
- Language:
- English
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