I. The nuclear reaction

Advantages

-There is no chain reaction

-The reaction can be stopped at any time

-Doesn't produce any radioactive waste

Natural reserves of tritium of the surface of the Earth : 2,5kg to 3kg.

Consequences

Tritium must be produced artificially (6/3 Li + 1/0 n --> 3/1 H + 4/2 He).

II.The ITER project

What ?

It be built in the south of france (cadarache).

Objectives : he designs of the 1st fusion plant to test new technologies.

Next generation : DEMO --> will send power (électricité) to the grid (réseau) in 2050.

Gas turned into plasma

The plasma is obtained by heating a gas with intense electrical currents (courants électriques intenses) (joules effect).

The temperature is reached inside tokamak : the temperature of plasma = 100 millions °C bc high temperature = high speed, so that they can overcome their electric repulsions and fuse.

Role of the magnets

Create an invisible cage to avoid (éviter) the contact between the plasma and the walls.