期刊
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
卷 52, 期 1, 页码 364-370出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNS.2005.844319
关键词
interferometric imaging; isotopic distributions; neutron interferometry; neutron phase-contrast tomography
Attenuation-contrast tomography with monochromatic thermal neutrons becomes a standard tool at many places in the world. A new tomographic neutron technique-the inter-ferometric imaging or neutron phase-contrast tomography (nPCT)-is introduced. nPCT is similar to x-ray phase-contrast tomography (xPCT) and offers a complete three-dimensional (3-D) investigation of the attenuation, the small angle scattering, and the phase-shifting properties of isotope distributions in the sample. As a first demonstration of the feasibility of nPCT, an aluminum screw has been imaged in an aluminum block of slightly different composition. A spatial resolution of 100 mu m has been achieved and the high sensitivity of phase-contrast measurements with thermal neutrons was verified.
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