The Energy Loss of Low Energy Protons in Some Gases

Abstract

Experimental values for the energy loss of protons in ${\mathrm{H}}_{2}$, He, ${\mathrm{N}}_{2}$, ${\mathrm{O}}_{2}$, A, Kr, ${\mathrm{H}}_{2}$O, C${\mathrm{O}}_{2}$, and C${\mathrm{Cl}}_{4}$ have been obtained in the region from 10 to 80 kev. The energy loss ($\frac{\ensuremath{\Delta}E}{\ensuremath{\Delta}x}$) can be expressed for the elementary gases measured in terms of a single curve, with two constants $\frac{\ensuremath{\Delta}E}{\ensuremath{\Delta}x}=Lf(\mathrm{ME})$. The energy loss per atom is independent of the target density over the range 0 to 1.5-mm Hg, and the energy loss for compound gases is equal to the sum of their components.