High frame-rate neutron radiography of dynamic events

Conference · Fri Nov 20 04:00:00 EST 1981

OSTI ID:5685357

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

A system has been developed to perform neutron radiographic analysis of dynamic events having a duration of several milliseconds. The system has been operated in the range of 2000 to 10,000 frames/second. Synchronization 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. The equipment uses the Oregon State University TRIGA reactor capable of 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 10/sup 11/ n/cm/sup 2/s with a pulse, full width at half maximum, of 9 ms. Special studies have been performed on the scintillator conversion screens and on the effects of statistical limitations on the image quality. Modulation transfer function analysis has been used to assist in the evaluation of the system performance.

• Research Organization: Lawrence Livermore National Lab., CA (USA); Oregon State Univ., Corvallis (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5685357
• Report Number(s): UCRL-86954; CONF-811215-1; ON: DE82004389
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
440300* -- Miscellaneous Instruments-- (-1989)
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450100 -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
47 OTHER INSTRUMENTATION
AMMUNITION
BARYONS
CAMERAS
DETONATIONS
DYNAMICS
ELEMENTARY PARTICLES
ENRICHED URANIUM REACTORS
FERMIONS
FLUID FLOW
GUNS
HADRONS
HOMOGENEOUS REACTORS
HYDRIDE MODERATED REACTORS
IMAGE PROCESSING
INDUSTRIAL RADIOGRAPHY
IRRADIATION REACTORS
ISOTOPE PRODUCTION REACTORS
MECHANICS
NEUTRON CAMERAS
NEUTRON RADIOGRAPHY
NEUTRONS
NUCLEONS
OSTR REACTOR
PHOTOGRAPHY
PROCESSING
PULSED REACTORS
REACTORS
RESEARCH AND TEST REACTORS
SOLID HOMOGENEOUS REACTORS
THERMAL NEUTRONS
TRAINING REACTORS
TRIGA TYPE REACTORS
TWO-PHASE FLOW
ULTRAHIGH-SPEED PHOTOGRAPHY
WATER COOLED REACTORS
WATER MODERATED REACTORS