The Linear Energy Transfer Distributions Resulting from Primary and Scattered X-Rays and Gamma Rays with Primary HVL's from 1.25 mm Cu to 11 mm Pb

Abstract

The linear energy transfer (LET) distribution and the number and energy average LET of electrons set in motion by primary and water-scatiered beams of radiation with primary half value layer from 1.25 mm Cu to 11 mm Pb are presented. The effect of energy degradation due to scatter in H₂O is very small. Few biological systems are likely to be sensitive enough to changes in LET to make the effect of energy degradation in an absorber biologically significant. (auth)