Free Ion Yields and Electron Ranges in X Irradiated Simple Liquids: Unusual Behavior in Carbon Dioxide and Carbon Disulfide

The radiolysis free ion yields G fi 0 and electron penetration ranges b GP in the liquids carbon dioxide and carbon disulfide are much larger than would be predicted by extrapolation from earlier studies of unsaturated hydrocarbons. In the isoelectronic, nonpolar compounds carbon dioxide and propadiene at 212 ± 4 K G fi 0 = 0.19 and 0.022, respectively, with b GP = 116 and 37 Å. In carbon disulfide G fi 0 = 0.44 ± 0.02, independent of temperature over the range 169 to 354 K; the electron penetration range appears to increase with decreasing temperature in this liquid. In the unsymmetrical, polar compound carbonyl sulfide, G fi 0 = 0.089 and b GP = 37 Å at 214 K; the behavior is similar to that in ethers.