High Speed Motion Neutron Radiography Of Dynamic Events

A. H. Robinson; R. H. Bossi; J. P. Barton

doi:10.1117/12.967825

1 March 1983 High Speed Motion Neutron Radiography Of Dynamic Events

A. H. Robinson, R. H. Bossi, J. P. Barton

Proceedings Volume 0348, 15th Intl Congress on High Speed Photography and Photonics; (1983) https://doi.org/10.1117/12.967825
Event: 15th International Congress on High Speed Photography and Photonics, 1982, San Diego, United States

Abstract

This paper describes the development of a technique that enables the neutron radiographic analysis of dynamic processes over a period lasting from one to ten milliseconds. The key to the technique is the use of a neutron pulse that is broad enough to span the duration of the brief event of interest and intense enough to permit recording of the results on a high-speed movie film at frame rates up to 10,000 frames/second. A system has been developed which utilizes the pulsing capability of the OSU TRIGA reactor. The system consists of the Oregon State University TRIGA reactor (pulsing to 3000 MW peak power), a neutron beam collimator, a scintillator neutron conversion screen coupled to an image intensifier, and a 16 mm high speed movie camera. The peak neutron flux incident at the object position is approximately 4 x 1011 n/cm2s with a pulse, full width at half maximum, of 9 ms. The system has been operated in the range of 2000 to 10,000 frames/second and has provided high-speed-motion neutron radiographs for evaluation of the firing cycle of 7.62 mm munition rounds within a steel rifle barrel. The system has also been used to demonstrate the ability to produce neutron radiographic movies of two-phase flow.

Citation Download Citation

A. H. Robinson, R. H. Bossi, and J. P. Barton "High Speed Motion Neutron Radiography Of Dynamic Events", Proc. SPIE 0348, 15th Intl Congress on High Speed Photography and Photonics, (1 March 1983); https://doi.org/10.1117/12.967825

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