At Temperatures at Which Useful Fusion Reactions Occur

In addition high-energy nuclear reactions such as occur in cosmic radiation showers or accelerator collisions also produce neutrons from disintegration of target nuclei. Although it makes a useful neutron generator the apparatus is not intended for power generation since it requires far more energy than it produces.

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Reversible thermal expansionAny material expands when heat ed and contracts when cooled.

. At the estimated energy levels the D-D fusion reaction may occur producing helium-3 and a 245 MeV neutron. This is generally observed in blast furnaces. D-T fusion reactions have been observed with a tritiated erbium target.

The reversible thermal expansion is a reflection on the phase transformations that occur during. In practice the most commonly used small laboratory sources of neutrons use. Small tabletop particle accelerators optimized to produce free neutrons in this way are called neutron generators.

Fusion dust and slag or by the action of alkalies on fireclay refractories to form alkali-alumina silicates.

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