Results 241 to 250 of about 200,100 (292)
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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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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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Thermal neutron capture in silicon
Physical Review C, 1990The prompt gamma-rays from thermal nuteron capture in {sup 28,29,30}Si have been studied and the radiative capture cross sections determined as 207{plus minus}4, 120{plus minus}3 and 107{plus minus}2 mb, respectively. There has been a marked increase in the number of transitions observed in {sup 29}Si and a complete decay scheme for this nucleus is ...
, Islam, , Kennett, , Prestwich
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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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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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Thermal neutron driven, 14.1 MeV neutron generators
Nuclear Instruments and Methods in Physics Research, 1983Abstract A detailed theoretical and experimental study of the production of 14.1 MeV neutrons from thermal neutrons using simple convertors has been performed. These convertors rely on the absorption of a thermal neutron resulting in a triton which interacts with deuterium producing a 14.1 MeV neutron. Three different systems have been studied: 6 LiD,
William H. Miller +2 more
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Pulsed thermal neutron source at the fast neutron generator
Applied Radiation and Isotopes, 2009A small pulsed thermal neutron source has been designed based on results of the MCNP simulations of the thermalization of 14 MeV neutrons in a cluster-moderator which consists of small moderating cells decoupled by an absorber. Optimum dimensions of the single cell and of the whole cluster have been selected, considering the thermal neutron intensity ...
Grzegorz, Tracz +3 more
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Inorganic thermal-neutron scintillators
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2004A review is presented of research and development of inorganic scintillators for position-sensitive thermal-neutron detectors to be used at new spallation neutron sources.
C.W.E van Eijk, A Bessière, P Dorenbos
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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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