Results 111 to 120 of about 16,577 (167)
Construction and mechanical properties of boron carbide/regenerated cellulose composite fiber based on copper ammonia method. [PDF]
PLoS OneTang Y, Ban S, Sun J, Zheng J.
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Metrologia, 2011
Over the 50-year history of Section III (Neutron Measurements) of the Consultative Committee for Ionizing Radiation of the International Committee for Weights and Measures, only a single interlaboratory comparison of thermal neutron measurements has been completed, although a new comparison of this kind is in progress at the time of this writing.
J G Williams, D M Gilliam
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Over the 50-year history of Section III (Neutron Measurements) of the Consultative Committee for Ionizing Radiation of the International Committee for Weights and Measures, only a single interlaboratory comparison of thermal neutron measurements has been completed, although a new comparison of this kind is in progress at the time of this writing.
J G Williams, D M Gilliam
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Shielding for thermal neutrons
Medical Physics, 1997The problem of calculating the neutron capture γ‐ray dose rate due to thermal neutron capture in a boron or cadmium rectangular shield is considered. An example is given for shielding for a door at the exit of medical accelerator room maze in order to determine the optimum location of lead relative to the borated polyethylene.
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1964
Our first discussion of thermal neutron fields in Sec. 5.3 was based on the idealizing assumption that the neutrons were in a true state of thermal equilibrium and thus had a Maxwellian energy distribution with the temperature of the medium. For reasons already mentioned there, the assumption of such an equilibrium state cannot be rigorously true.
K. H. Beckurts, K. Wirtz
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Our first discussion of thermal neutron fields in Sec. 5.3 was based on the idealizing assumption that the neutrons were in a true state of thermal equilibrium and thus had a Maxwellian energy distribution with the temperature of the medium. For reasons already mentioned there, the assumption of such an equilibrium state cannot be rigorously true.
K. H. Beckurts, K. Wirtz
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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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