Beryllium usage in fusion blankets and beryllium data needs. [None]

Beryllium usage in fusion blankets and beryllium data needs. [None] [electronic resource]

Increasing numbers of designers are choosing beryllium for fusion reactor blankets because it, among all nonfissile materials, produces the highest number (2.5 neutron in an infinite media) of neutrons per 14-MeV incident neutron. In amounts of about 20 cm of equivalent solid density, it can be used...

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Bibliographic Details
Online Access: Online Access
Corporate Author: Lawrence Livermore National Laboratory (Researcher)
Format: Government Document Electronic eBook
Language:English
Published: Livermore, Calif : Oak Ridge, Tenn. : Lawrence Livermore National Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1988.
Subjects:
Safety.
Beta Decay Radioisotopes.
Corrosion.
Neutrons.
Shielding.
Elementary Particles.
Beryllium.
Thermonuclear Reactor Materials.
Beta-minus Decay Radioisotopes.
Cobalt Isotopes.
Nucleons.
Isotopes.
Molten Salt Reactors.
Tritium.
Neutron Fluence.
Cobalt 60.
Baryons.
Cost.
Elements.
Fermions.
Intermediate Mass Nuclei.
Materials.
Isomeric Transition Isotopes.
Breeding Blankets.
Odd-even Nuclei.
Metals.
Reactors.
Odd-odd Nuclei.
Minutes Living Radioisotopes.
Alkaline Earth Metals.
Hadrons.
Damaging Neutron Fluence.
Chemical Reactions.
Hydrogen Isotopes.
Reactor Components.
Internal Conversion Radioisotopes.
Light Nuclei.
Nuclei.
Years Living Radioisotopes.
Radioisotopes.
Plasma Physics And Fusion Technology.
Description
Summary:Increasing numbers of designers are choosing beryllium for fusion reactor blankets because it, among all nonfissile materials, produces the highest number (2.5 neutron in an infinite media) of neutrons per 14-MeV incident neutron. In amounts of about 20 cm of equivalent solid density, it can be used to produce fissile material, to breed all the tritium consumed in ITER from outboard blankets only, and in designs to produce Co-60. The problem is that predictions of neutron multiplication in beryllium are off by some 10 to 20% and appear to be on the high side, which means that better multiplication measurements and numerical methods are needed. The n,2n reactions result in two helium atoms, which cause radiation damage in the form of hardening at low temperatures (<300°C) and swelling at high temperatures (>300°C). The usual way beryllium parts are made is by hot pressing the powder. A lower cost method is to cold press and then sinter. There is no radiation damage data on this form of beryllium. The issues of corrosion, safety relative to the release of the tritium built-up inside beryllium, and recycle of used beryllium are also discussed. 10 figs.
Item Description:Published through the Information Bridge: DOE Scientific and Technical Information.
04/06/1988.
"ucrl-97426"
" conf-880417-8"
"DE88008676"
International symposium on fusion nuclear technology, Tokyo, Japan, 10 Apr 1988.
Moir, R.W.
Physical Description:Pages: 27 : digital, PDF file.

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