of a charged particle in a medium; the quotient of dE by dl where dl is the distance traversed by a particle and dE is the energy loss due to collisions with energy transfer less than a specified value Δ usually expressed in electron volts
NOTE – Although the definition specifies an energy cutoff and not a range cutoff the energy losses are sometimes called "energy locally imparted".
Examples: L100 means linear energy transfer for collisions with energy transfers less than 100 eV; L∞ means linear energy transfer when all possible energy transfers are included.
L∞ = Scol
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