There are two ways to achieve the temperatures and pressures necessary for hydrogen fusion to take place. Which of the following processes does a tokamak nuclear reactor employ to achieve conditions of fusion?

1. Magnetic confinement
2. Inertial confinement

Magnetic confinement uses magnetic and electric fields to heat and squeeze the hydrogen plasma. Microwaves, electricity and neutral particle beams from accelerators heat a stream of hydrogen gas. This heating turns the gas into plasma. This plasma gets squeezed by super-conducting magnets, thereby allowing fusion to occur. The most efficient shape for the magnetically confined plasma is a donut shape (toroid). A reactor of this shape is called a tokamak. ITER project in France is using this method.