Abstract
Neutron radiography and tomography is widely used for research as well as industrial applications. Conventional neutron imaging is based on absorption contrast wherein a neutron beam passing through an object undergoes loss in intensity due to absorption or scattering and the transmitted neutron intensity is recorded by a detector to provide spatially resolved image. The mathematics behind the formation of the projection image has been discussed in this chapter. The projection images at various angles are used to reconstruct complete cross-sectional information of the object and the technique is known as computed tomography. This is an inverse problem where line integrals are used to deduce the linear attenuation coefficients. The mathematics concerned with formation of system of linear equations and their conversion to obtain unknown attenuation coefficients of the object have been discussed.
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Roy, T. (2022). Basic Principles of Neutron Radiography and Tomography. In: Aswal, D.K., Sarkar, P.S., Kashyap, Y.S. (eds) Neutron Imaging. Springer, Singapore. https://doi.org/10.1007/978-981-16-6273-7_5
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DOI: https://doi.org/10.1007/978-981-16-6273-7_5
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