This activity might not be viewable on your mobile device. Video segment. Assistance may be required. Watch the following short video about nuclear fusion.

Source: Nuclear Fusion, Institut für Energie-und Klimaforschung (IEK)

There are different kinds of fusion reactions. Most of these reactions involve the isotopes of hydrogen called deuterium and tritium. Here are two types of fusion reactions:

A deuterium nucleus consists of a neutron and a proton.

A tritium nucleus consists of two neutrons and a proton.

Video segment. Assistance may be required. The following animation demonstrates a deuterium-tritium reaction. (Neutrons are white in this animation. Protons are red.)

Source: Nuclear Fusion Animation, coolnavybear, YouTube

In your notes, describe what is happening in the animation.

Interactive popup. Assistance may be required.

Check Your Answer

Two nuclei come together and form a helium nucleus with two protons and two neutrons. That leaves a single neutron which breaks away during the reaction. Close Pop Up