Table 2.
Results from molecular dynamics simulations of impact of CH3+ and C3H5+ with polystyrene at incident kinetic energies of 20 and 50 eV per ion
| 20 eV
|
50 eV
|
|||
|---|---|---|---|---|
| CH3+ | C3H3+ | CH3+ | C3H5+ | |
| Simple scattering from the surface | 12.5 | 22.5 | 2.5 | |
| Scattering from the surface with a captured H atom | 7.5 | 5 | ||
| Knocking out H from surface | 12.5 | 5 | 12.5 | |
| Adsorption on or close to surface | 12.5 | 15 | 2.5 | 2.5 |
| Penetration and incorporation within surface | 55 | 57.5 | 17.5 | 17.5 |
| Dissociation (loosing one or more H atoms) | 75 | 25 | ||
| Dissociation CH2 + C2H3 | 25 | |||
| Dissociation CH + H + C2H3 | 5 | |||
| Dissociation 2CH2 + CH | 2.5 | |||
| Dissociation CH3 + C2H2 | 2.5 | |||
| Dissociation CH2 + H + C2H2 | 5 | |||
The table shows the percentage of each process that occurs on impact.