Results 131 to 140 of about 911 (181)

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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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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Design and performance of an epithermal neutron detector based on PFN

Applied Radiation and Isotopes, 2023
In this paper, an epithermal neutron detector suitable for the Prompt Fission Neutron (PFN) uranium logging method is designed by Monte Carlo simulation. According to the simulation results, the epithermal neutron detector composed of a 1 mm cadmium (Cd) layer, a 5 mm high-density polyethylene (HDPE) layer, and a 3He tube is sensitive to epithermal ...
YuChao Yang, Xiongjie Zhang, Yan Zhang, Bin Tang, Jinhui Qu, Jun Qiu, Chunqing Fu, Guanbo Wang   +7 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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A toolkit for epithermal neutron beam characterisation in BNCT

Radiation Protection Dosimetry, 2004
Methods for dosimetry of epithermal neutron beams used in boron neutron capture therapy (BNCT) have been developed and utilised within the Finnish BNCT project as well as within a European project for a code of practise for the dosimetry of BNCT. One outcome has been a travelling toolkit for BNCT dosimetry.
Seren, Tom, Uusi-Simola, Jouni, Kosunen, Antti, Savolainen, Sauli, Auterinen, Iiro   +5 more
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Toxicity to rabbit retina of “epithermal” neutron beam

International Journal of Nuclear Medicine and Biology, 1974
Abstract A comparison was made between the 24-hr effects of fully thermalized and partially thermalized atomic pile radiation on four metabolic indicators in rabbit retina. The purpose was to estimate the retinal toxic effect of each quality of radiation relative to the thermal neutron fluence available in the posterior ocular segment for neutron- 10
D.L Krohn, J.C Newton, M.C Barsa-Newton, J.H Jacobson, R.F Straub, J.S Robertson   +5 more
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Studies on the properties of an epithermal-neutron hydrogen analyzer

Applied Radiation and Isotopes, 2010
Systematic investigations have proved the advantages of the Epithermal Neutron Analyzer (ETNA) for bulk hydrogen analysis as compared to the thermal neutron techniques. Results can contribute, for example, to the design and construction of instruments needed for the detection and identification of plastic anti-personnel landmines, explosives hidden in ...
A, Papp, J, Csikai
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Renovation of epithermal neutron beam for BNCT at THOR

Applied Radiation and Isotopes, 2004
Heading for possible use for clinical trial, THOR (Tsing Hua Open-pool Reactor) at Taiwan was shutdown for renovation of a new epithermal neutron beam in January 2003. In November 2003, concrete cutting was finished for closer distance from core and larger treatment room.
Y-W H, Liu, T T, Huang, S H, Jiang, H M, Liu   +3 more
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