STOPPING POWER
Text: The rate at which the moving electron loses energy is one quantity that is precisely known, at least for electrons of energy exceeding a few hundred electron volts. It is usually expressed as the amount [of energy] lost per unit distance traveled and may be denoted by - dE/dx. This quantity is called stopping power by physicists, and linear energy transfer or LET by radiobiologists.
See Also: HARMONIZATION, SYMPATHIZATION
Source: 115