| Isotopic effect in double ionization of water |
| H2+
+ O+ |
| = 0.209 ± 0.006 % |
| H+
+ OH+ |
| Double Ionization |
| = 0.555
± 0.033! |
| D2+
+ O+ |
| = 0.116 ± 0.006 % |
| D+
+ OD+ |
| H2+
+ O |
| = 0.125 ±
0.013 % |
| H2O+ |
| = 0.401 ± 0.047 |
| Single Ionization |
| D2+
+ O |
| = 0.0500 ±
0.0028 % |
| D2O+ |