High speed motion neutron radiography

Thesis/Dissertation · Sat Jan 01 04:00:00 EST 1977

OSTI ID:7083808

Bossi, R H

A system to perform neutron radiographic analysis of dynamic events taking place over the order of several milliseconds was developed. The design consists of a TRIGA reactor capable of pulsing to 3000 MW peak power, a neutron beam collimator with an L/D of about 30:1, a lithium fluoride-zinc sulphide (LiF-ZnS) neutron scintillator screen, an image intensifier and a 16 mm high speed movie camera. The TRIGA reactor pulse and beam port collimator combine to yield a peak thermal neutron flux of about 4.2 x 10/sup 11/ n/cm/sup 2/-sec at the object with a pulse width (FWHM) of 9 milliseconds. During this pulse duration sequential neutron radiographs are taken by the imaging system which detail any movement occurring in the object. The imaging system operates by converting the neutron signal to light, amplifying the light signal and recording the information on 16 mm Rapid Arts Recording film. LiF-ZnS neutron scintillator screens of 2/1 weight ratio of ZnS to LiF and 0.13 mm thickness constructed at OSU with sodium silicate binder are found to be very successful. The construction of the scintillators plus both an analytical model and experimental study of their performance is described.

• OSTI ID: 7083808
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500* -- Engineering-- Materials Testing
EQUIPMENT
INDUSTRIAL RADIOGRAPHY
MATERIALS TESTING
NEUTRON RADIOGRAPHY
NONDESTRUCTIVE TESTING
OPERATION
PERFORMANCE
PHOTOGRAPHY
TESTING
ULTRAHIGH-SPEED PHOTOGRAPHY