mass stopping power
Also found in: Medical.
mass stopping power[′mas ′stäp·iŋ ‚pau̇·ər]
The decrease, per unit surface density traversed, in kinetic energy of an ionizing particle passing through matter; equal to the linear energy transfer (energy loss per unit path length) divided by the density of the material.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.