IMPROVEMENTS IN CODED APERTURE THERMAL NEUTRON IMAGING.
A new thermal neutron imaging system has been constructed, based on a 20-cm x 17-cm He-3 position-sensitive detector with spatial resolution better than 1 mm. New compact custom-designed position-decoding electronics are employed, as well as high-precision cadmium masks with Modified Uniformly Redundant Array patterns. Fast Fourier Transform algorithms are incorporated into the deconvolution software to provide rapid conversion of shadowgrams into real images. The system demonstrates the principles for locating sources of thermal neutrons by a stand-off technique, as well as visualizing the shapes of nearby sources. The data acquisition time could potentially be reduced two orders of magnitude by building larger detectors.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY (US)
- Sponsoring Organization:
- DOE/SC (US)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 15006595
- Report Number(s):
- BNL-71468-2003-CP; R&D Project: 04988; NN4001040; TRN: US0400932
- Resource Relation:
- Conference: SPIE ANNUAL MEETING 2003, SAN DIEGO, CA (US), 08/03/2003--08/08/2003; Other Information: PBD: 3 Aug 2003
- Country of Publication:
- United States
- Language:
- English
Similar Records
Class of near-perfect coded apertures
Coded source neutron imaging at the PULSTAR reactor