Differences between nuclear fission and nuclear fusion

 Nuclear Fission:

1- Heavy nuclei split into lighter nuclei of comparable atomic masses

2- nuclei of heavy elements undergo fission

3- The reaction initiates at normal temperature

4- The fission process liberates about 200 MeV energy

5- Fast neutrons are also released

6- Fuel is either solid or liquid .

Nuclear fusion:

1- lighter nuclei fuse to form heavy nuclei.

2- nuclei of light elements are in involved in       the process of fusion.

3- Fusion initiates at 10^8 K.

4- The energy released in 24 MeV.

5- nature of the ejected particles depends uopn the type of thermonuclear reaction.

6- Fuel is in plasma state.