Impacts to Nondestructive Testing by New Methods in Neutron Imaging Technology

Although the method of neutron imaging (formerly named as neutron radiography) has been available since more than 50 years, methodical and technical developments have increased its application potential enormously. By using highly sensitive digital neutron imaging detector systems it is possible today to obtain single frames within milliseconds. On the other hand, different options to enhance contrasts and to optimize the visibility by tuning the experimental conditions in respect to the neutron energy, collimation, coherence and spatial resolution are under development. The paper will report the present state of the technology of neutron imaging and tries to give a forecast for future potential of improvements. Most of the practical experiences are based on studies at the beam lines at the SINQ spallation neutron source at PSI, Switzerland, the Swiss national basis of neutron research.

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