énergie de fusion
- Domaine
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- physique énergie nucléaire
- Date
Terme :
- énergie de fusion n. f.
Traductions
-
anglais
Date :Définition
Energy release during the process of nuclear fusion.
Note :
In fusion, two light nuclei are united to form a heavier nucleus, thereby releasing energy. The fusion reaction uses the heavy isotopes of hydrogen known as deuterium and tritium. Deuterium can be economically separated from sea water, and tritium can be obtained in a nuclear reaction involving lithium. To make controlled fusion work one must heat an electrified gas called a plasma to temperatures on the order of 100 to 300 million degrees Centigrade (Celcius) - hotter than the interior of the sun. This gas must then be contained in some way so that it does not touch the walls of the vessel, and held in this condition until an adequate number of fusion reactions take place. One approach is to confine a fusion plasma with the use of specially-shaped magnetic fields which control the motions of the plasma. Another potentially feasible approach is to use high-powered lasers to initiate and confine fusion reactions.
Terme :
- fusion power