Results 241 to 250 of about 201,035 (291)
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Use of thermal-neutron probes to measure thermal-neutron flux of distributions
Soviet Atomic Energy, 1979At the present time considerable attention is being paid to the monitoring of energy release in the cores of nuclear reactors for various purposes [i]. Exact and reliable measurement of the neutron fields in reactor cores requires continuous improvement of old experimental methods and development of new ones.
Yu. A. Safin +5 more
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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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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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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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IEEE Transactions on Nuclear Science, 2003
The first NIST-traceable measurements of environmental thermal neutrons have been completed. The average sea level flux of thermal neutrons is 4 cm/sup 2//hr. This flux changes less than two times over wide varieties of terrain, in all weather conditions and over the solar year. The neutron flux is normalized to 39N-76.5W.
J.D. Dirk +4 more
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The first NIST-traceable measurements of environmental thermal neutrons have been completed. The average sea level flux of thermal neutrons is 4 cm/sup 2//hr. This flux changes less than two times over wide varieties of terrain, in all weather conditions and over the solar year. The neutron flux is normalized to 39N-76.5W.
J.D. Dirk +4 more
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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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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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