Stopping cross sections of oxygen for 0.3-2.0-MeVαparticles in saturated alcohols and ethers

The stopping cross sections of three saturated alcohols, C${\mathrm{H}}_3$OH, ${\mathrm{C}}_2$ ${\mathrm{H}}_5$OH, and ${\mathrm{C}}_3$ ${\mathrm{H}}_7$OH, and two saturated ethers, (C${\mathrm{H}}_3$)${}_2{}^{}{}_{}{}^{}\mathrm{O}$ and (${\mathrm{C}}_2$ ${\mathrm{H}}_5$)O, have been measured in a differentially pumped gas cell with probable random errors of 0.5-1.1%. The results confirm that $\epsilon \left(\mathrm{C}{\mathrm{H}}_2\right)$ quoted in a previous paper can be used to predict the stopping cross sections for single-bonded C-H-O compounds. The values for the stopping cross section of single-bonded oxygen are extracted and found to be 3-17% lower than $\left(\frac{1}{2}\right){\epsilon }_{\mathrm{expt}}\left({\mathrm{O}}_2\right)$, thereby demonstrating the effect of chemical bonding on the stopping cross section. Comparison is made between the stopping cross sections for oxygen and those calculated from metal-oxide yield ratios.