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Neutron thermalization in graphite
Journal of Nuclear Energy, 1968Abstract The neutron thermalization process for an incident neutron pulse in a moderating assembly has so far been treated by solving the Boltzmann equation in the diffusion approximation with scattering kernel based on theoretical models. In this paper, the mean energy, E (t) and average logarithmic energy decrement, ξ for an infinite medium
M.P. Navalkar, S.B.D. Iyengar
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2017
Neutrons reach thermal energy following successive collisions with moderator nuclides provided they are neither absorbed nor leak out of the reactor. At this point, they can either lose energy by collision or gain energy if the target nucleus is itself in thermal motion, and can thus transfer momentum to the neutrons.
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Neutrons reach thermal energy following successive collisions with moderator nuclides provided they are neither absorbed nor leak out of the reactor. At this point, they can either lose energy by collision or gain energy if the target nucleus is itself in thermal motion, and can thus transfer momentum to the neutrons.
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2006
This chapter concerns the detection of neutrons having thermal and epithermal energies in the range 0.0002–10 eV (20–0.1 A). Topics covered include neutron capture, neutron detection processes and electronic aspects of neutron detection. Typical detection systems and their characteristics are described.
P. Convert, P. Chieux
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This chapter concerns the detection of neutrons having thermal and epithermal energies in the range 0.0002–10 eV (20–0.1 A). Topics covered include neutron capture, neutron detection processes and electronic aspects of neutron detection. Typical detection systems and their characteristics are described.
P. Convert, P. Chieux
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2009
X-ray and neutron diffraction techniques have for almost a century produced results that provide important insights into materials of interest to a wide range of scientific and technological disciplines. However, traditional diffraction techniques have their limits, and these limits are best exemplified by the fact that certain important materials (e.g.
B. Sur +3 more
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X-ray and neutron diffraction techniques have for almost a century produced results that provide important insights into materials of interest to a wide range of scientific and technological disciplines. However, traditional diffraction techniques have their limits, and these limits are best exemplified by the fact that certain important materials (e.g.
B. Sur +3 more
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Pramana, 1984
The basic principle for the production of polarised thermal neutrons is discussed and the choice of various crystal monochromators surveyed. Brief mention of broad-spectrum polarisers is made. The application of polarised neutrons to the study of magnetisation density distributions in magnetic crystals, the dynamic concept of polarisation, principle ...
N S Satya Murthy, L Madhav Rao
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The basic principle for the production of polarised thermal neutrons is discussed and the choice of various crystal monochromators surveyed. Brief mention of broad-spectrum polarisers is made. The application of polarised neutrons to the study of magnetisation density distributions in magnetic crystals, the dynamic concept of polarisation, principle ...
N S Satya Murthy, L Madhav Rao
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Polarizer for thermal neutrons
Physics Bulletin, 1977The interaction between the neutron and electron spin provides a unique tool for studying the distribution of magnetism in solids. Neutron scattering measurements with magnetic materials are particularly sensitive when the spin state of the neutron is defined, that is when the neutron beams are polarized.
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Neutron Thermalization in Graphite
Nuclear Science and Engineering, 1964In this work our ability to understand thermal-neutron spectra in graphite-moderated reactor systems is examined on the basis of a theoretical description of neutron scattering that begins at the m...
N. F. Wikner, G. D. Joanou, D. E. Parks
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Journal of Nuclear Energy. Parts A/B. Reactor Science and Technology, 1963
Abstract The effect of non-uniform temperature upon stationary distributions of thermal neutrons in extended non-absorbing media is studied on the basis of transport theory. Expressions are given by which the thermal diffusion factor, along with the coefficient of ordinary diffusion, can be computed for any given scattering law.
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Abstract The effect of non-uniform temperature upon stationary distributions of thermal neutrons in extended non-absorbing media is studied on the basis of transport theory. Expressions are given by which the thermal diffusion factor, along with the coefficient of ordinary diffusion, can be computed for any given scattering law.
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Detectors for thermal neutrons
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2004The characteristics, limits and adequate applications of position sensitive detectors for thermal neutrons are described.
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Nature, 1968
Low-Energy Neutron Physics By I. I. Gurevich and L. V. Tarasov. Translated by Scripta Technica. Edited by R. I. Sharp and S. Chomet. Pp. xiv + 607. (North-Holland: Amsterdam, 1968.) 210s.
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Low-Energy Neutron Physics By I. I. Gurevich and L. V. Tarasov. Translated by Scripta Technica. Edited by R. I. Sharp and S. Chomet. Pp. xiv + 607. (North-Holland: Amsterdam, 1968.) 210s.
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