Nuclear fusion

In physics, nuclear fusion is the process by which two nuclei join together to form a heavier nucleus. It is accompanied by the release or absorbtion of energy depending on the masses of the nuclei involved. The iron nucleus has the largest binding energy of all nuclei and so is the most stable. The fusion of two nuclei to produce a nucleus lighter than iron generally gives off energy while the fusion of nuclei heavier than iron absorbs energy. Nuclear fusion of light elements is the energy source which causes stars to shine and hydrogen bombs to explode. Nuclear fusion of heavy elements occurs in the extreme conditions of a supernova explosion. Nuclear fusion in stars and supernovae is the primary process by which new natural elements are created.

External links

• ITER – Experimental fusion reactor under construction in France
• Fusion.org.uk – A guide to fusion from the UKAEA
• SCKCEN.be – Belgian Nuclear Research Centre