Results 151 to 160 of about 8,017 (212)

Epithermal neutron activation analysis of food

Journal of Radioanalytical and Nuclear Chemistry, 1999
Food samples were irradiated with thermal and epithermal neutrons. The average ratios of thermal to epithermal activity were determined for80Br,49Ca,38Cl,60mCo,42K,27Mg,56Mn,24Na, and86mRB. They were equal to 2.1, 26, 24, 6.6, 19, 16, 11, 23 and 1.9, respectively.
L. Zikovsky, K. Soliman
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Biological Dosimetry for Epithermal Neutron Beams

Radiation Research, 2001
The radiobiological effectiveness of an epithermal neutron beam is described using cell survival as the end point. The M67 epithermal neutron beam at the Nuclear Reactor Laboratory, Massachusetts Institute of Technology, that was used for clinical trials of boron neutron capture therapy was used to irradiate Chinese hamster ovary cells at seven depths ...
S M, White, K D, Held, M R, Palmer, J C, Yanch   +3 more
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BINP accelerator based epithermal neutron source

Applied Radiation and Isotopes, 2011
Innovative facility for neutron capture therapy has been built at BINP. This facility is based on compact vacuum insulation tandem accelerator designed to produce proton current up to 10 mA. Epithermal neutrons are proposed to be generated by 1.915-2.5 MeV protons bombarding a lithium target using (7)Li(p,n)(7)Be threshold reaction.
V, Aleynik, A, Burdakov, V, Davydenko, A, Ivanov, V, Kanygin, A, Kuznetsov, A, Makarov, I, Sorokin, S, Taskaev   +8 more
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Accelerator‐based epithermal neutron beam design for neutron capture therapy

Medical Physics, 1992
Recent interest in the production of epithermal neutrons for use in boron neutron capture therapy (BNCT) has prompted an investigation into the feasibility of generating such neutrons with a high current proton accelerator. Energetic protons (2.5 MeV) on a 7Li target produce a spectrum of neutrons with maximum energy of roughly 800 keV.
J C, Yanch, X L, Zhou, R E, Shefer, R E, Klinkowstein   +3 more
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Activation by Epithermal Neutrons

1964
The considerations begun in Chapter 11 will now be extended to the practically important case in which the neutron field contains both thermal and epithermal neutrons. The very same activity that can be excited by absorption of thermal neutrons in the probe substance can also be excited by absorption of epithermal neutrons, and it is necessary to ...
K. H. Beckurts, K. Wirtz
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A prototype epithermal neutron beam for boron neutron capture therapy

Medical Physics, 1986
An epithermal neutron beam has been designed and tested at the Georgia Insitute of Technology's 5‐MW Research Reactor. The prototype facility consists of aluminum and sulfur disks in a tangential beam port for fast neutron filtration. A cadmium sheet at the port exit removes the thermal neutrons from the transmitted beam, leaving an intensely ...
D J, Noonan, J L, Russell, R M, Brugger
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Measurements of η for U233, U235 AND Pu239 With epithermal neutrons with epithermal neutrons

Journal of Nuclear Energy (1954), 1957
Abstract The behaviour of η for U 233 , U 235 and Pu 239 has been investigated in the epithermal energy region. For U 233 , η remains constant eneto energies of the order of 100 eV. The value for Pu 239 falls by 12% in passing from a thermal spectrum to a spectrum bounded by 0·15 and 0·5 eV, but remains constant thereafter.
P.E. Spivak, B.G. Erozolimsky, G.A. Dorofeev, Y.N. Lavrenchik, I.G. Kutikov, Y.P. Dobrynin   +5 more
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Epithermal neutron activation analysis

Journal of Radioanalytical and Nuclear Chemistry Articles, 1985
Different modes of epithermal neutron activation analysis are described. The principles and examples are given for each.
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EXCED - epithermal neutron diffractometer at KENS

Applied Physics A: Materials Science & Processing, 2002
A new epithermal neutron diffractometer (EXCED) was installed at the KENS spallation pulsed-neutron source. EXCED is designed to be a small scattering angle diffractometer using an incident neutron energy of about ∼1 eV for determining the crystal and magnetic structures of materials containing high-absorption elements.
K. Kuwahara, S. Sugiyama, K. Iwasa, M. Kohgi, M. Nakamura, Y. Inamura, M. Arai, S. Kunii   +7 more
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Fast- and epithermal-neutron flux measurement

Nuclear Instruments and Methods, 1974
Abstract The feasibility of applying fission-produced 140 Ba to determine fast- and epithermal-neutron fluxes was investigated experimentally. 140 Ba decays by beta-ray emission with a half-life of 12.8 d 1 to 140 La. The absolute activity of 140 La calculated from the measured activity of the 1596.2 keV peak with a calibrated Ge(Li) detector ...
N. Lavi, Z. Fishelzon
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