Half Life - The period of time required for half of a given quantity of an isotope to undergo radioactive decay. Hohlraum - A metal container that holds a ICF capsule. This in turn heats the outside surface of the capsule, which sees the hot hohlraum walls. Ion - An atom which has had one or more of its electrons removed, leaving the atom with a net positive electrical charge equal and opposite to the charge of the electrons which have been removed. Isotope - All atoms are made up of protons, neutrons, and electrons.
Elements can have different numbers of neutrons.
Isotopes of elements are atoms with the same number of protons, but different numbers of neutrons. A unit of energy, equal to the work required lift a one kilogram mass a distance of 0.101 meters, or to lift a one pound mass 8.8 inches. Kinetic Energy - Energy associated with the motion of an object, equal to one half times the object mass times the object speed squared. A typical person, working relatively hard, can generate around 200 watts of energy. Such a person would take 5 hours to generate one kilowatt hour, and at current typical electricity costs, would earn from 2 to 10 cents for their five hours of effort.