<P> Once fusion has begun, high energy neutrons will radiate from the reactive regions of the plasma, crossing magnetic field lines easily due to charge neutrality (see neutron flux). Since it is the neutrons that receive the majority of the energy, they will be ITER's primary source of energy output . Ideally, alpha particles will expend their energy in the plasma, further heating it . </P> <P> Beyond the inner wall of the containment vessel one of several test blanket modules will be placed . These are designed to slow and absorb neutrons in a reliable and efficient manner, limiting damage to the rest of the structure, and breeding tritium for fuel from lithium bearing ceramic pebbles contained within the blanket module following the following reactions: </P> <Dl> <Dd> 1 0n + 6 3Li → 3 + 4 2He </Dd> <Dd> 0n + 7 3Li → 3 + 4 2He + 1 0n </Dd> </Dl> <Dd> 1 0n + 6 3Li → 3 + 4 2He </Dd>

The largest amount of effort applied to a project is during its