Results 151 to 160 of about 8,063 (207)

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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Designing accelerator‐based epithermal neutron beams for boron neutron capture therapy

Medical Physics, 1998
Thereaction has been investigated as an accelerator‐driven neutron source for proton energies between 2.1 and 2.6 MeV. Epithermal neutron beams shaped by three moderator materials,andhave been analyzed and their usefulness for boron neutron capture therapy (BNCT) treatments evaluated.
D L, Bleuel, R J, Donahue, B A, Ludewigt, J, Vujic   +3 more
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The epithermal neutron flux distribution in a nuclear reactor and its effect on epithermal neutron activation analysis

Journal of Radioanalytical Chemistry, 1978
The shape of the epithermal neutron energy distribution has been determined in two irradiation positions of the University of London CONSORT II reactor. The method applied involves cadmium ratio measurements using a series of resonance detectors. Principles of the method and some considerations relative to epithermal neutron activation analysis in ...
T. Bereznai, T. D. Mac Mahon
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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
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +2 more sources

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
openaire   +1 more source

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.
openaire   +1 more source

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
openaire   +1 more source