Results 281 to 290 of about 191,550 (335)
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The European Physical Journal Plus, 2014
Many research activities, instrumental analysis, studies of radiation damage, etc., require neutron sources. The main neutron sources present in Italy are described in three different sections: nuclear research reactors, accelerator driven, and metrology stations.
Prata M. +8 more
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Many research activities, instrumental analysis, studies of radiation damage, etc., require neutron sources. The main neutron sources present in Italy are described in three different sections: nuclear research reactors, accelerator driven, and metrology stations.
Prata M. +8 more
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Review of Scientific Instruments, 1955
A pulsed neutron source is described which gives 106 neutrons in a burst which is 2×10−8 second wide. The plasma of an ion pump is used as the source of deuterium ions which are accelerated to 200 kv before striking a deuterium target, where the D(d,n)He3 reaction produces 2 to 3 Mev neutrons.
E. Frank Martina, Val J. Ashby
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A pulsed neutron source is described which gives 106 neutrons in a burst which is 2×10−8 second wide. The plasma of an ion pump is used as the source of deuterium ions which are accelerated to 200 kv before striking a deuterium target, where the D(d,n)He3 reaction produces 2 to 3 Mev neutrons.
E. Frank Martina, Val J. Ashby
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1986
Publisher Summary This chapter discusses the neutron sources. All neutron sources are based on nuclear reactions that free neutrons bound in nuclei. These are categorized according to the mechanisms by which this is done: fission chain reactions, fusion reactions, e--bremsstrahlung-induced photoneutron and photofission reactions, charged-particle ...
John M. Carpenter, William B. Yelon
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Publisher Summary This chapter discusses the neutron sources. All neutron sources are based on nuclear reactions that free neutrons bound in nuclei. These are categorized according to the mechanisms by which this is done: fission chain reactions, fusion reactions, e--bremsstrahlung-induced photoneutron and photofission reactions, charged-particle ...
John M. Carpenter, William B. Yelon
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Polarized neutrons for pulsed neutron sources
Journal of Neutron Research, 2005Polarized neutrons provide a powerful tool for research at today’s continuous neutron sources, permitting unique information to be obtained from neutron-scattering experiments and in the area of fundamental neutron physics. The information obtained is indispensable to important areas of current research such as magnetism, spin fluctuations in ...
Ian.S. Anderson +10 more
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Fusion for Neutrons: A Realizable Fusion Neutron Source
IEEE Transactions on Plasma Science, 2011For 60 years, fusion research has been focused on fusion for energy as the ultimate carbon-free solution to the world's energy problems. It is proving a worthy but difficult task. However, it is relatively easy to produce high-energy fusion neutrons.
A Sykes +4 more
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China's first pulsed neutron source
Nature Materials, 2016The China Spallation Neutron Source is expected to produce its first beam in 2017. Hesheng Chen and Xun-Li Wang provide an overview of this user facility and what it means for science in China and elsewhere.
Hesheng, Chen, Xun-Li, Wang
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Neutron source for Neutron Capture Synovectomy
AIP Conference Proceedings, 2011Monte Carlo calculations were performed to obtain a thermal neutron field from a 239PuBe neutron source inside a cylindrical heterogeneous moderators for Neutron Capture Synovectomy. Studied moderators were light water and heavy water, graphite and heavy water, lucite and polyethylene and heavy water.
Héctor René Vega-Carrillo +3 more
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Neutron Dosimetric Quantities For Several Radioisotopic Neutron Sources
Health Physics, 1992The fluence-weighted and dose equivalent-weighted average energies, and the spectrum-averaged fluence-to-dose equivalent conversion factors have been calculated for 52 spectrum variations of 20 different radioisotopic neutron sources. An internally consistent method of determination enables comparison of values for different spectra.
M A, Buckner, C S, Sims
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Neutronics of pulsed spallation neutron sources
Reports on Progress in Physics, 2003Various topics and issues on the neutronics of pulsed spallation neutron sources, mainly for neutron scattering experiments, are reviewed to give a wide circle of readers a better understanding of these sources in order to achieve a high neutronic performance.
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Journal of Nuclear Energy. Parts A/B. Reactor Science and Technology, 1963
Experimental work on cold neutron source development is reviewed along with the theoretical explanations devised for the results obtained. Factors governing source design, the associated cryogenic and safety problems, large source design, and experiments by which source efficiency might be increased are also discussed. (D.C.W.)
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Experimental work on cold neutron source development is reviewed along with the theoretical explanations devised for the results obtained. Factors governing source design, the associated cryogenic and safety problems, large source design, and experiments by which source efficiency might be increased are also discussed. (D.C.W.)
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