Beginning of Essay
For a fusion reaction to take place, the nuclei, which are positively charged, must have enough kinetic energy to overcome their electrostatic force of repulsion. This can occur either when one nucleus is accelerated to high energies by an accelerating device, or ....

Middle of Essay
.... regular nucleus. Such a reaction is not self sustaining because the released energy is not readily imparted to other nuclei. thermonuclear fusion of deuterium and tritium will produce a helium nucleus and an energetic neutron that can help sustain further fusion. This is the basic principal of the hydrogen bomb which employs a brief, controlled thermonuclear fusion reaction. This was also how the car in the Back to the Future movie worked. It had a much more sophisticated system of producing a fusion reaction from things like, old coffee grounds, bananas, and old beer cans. Thermonuclear reactions depend on high energies, and the possibility of ....