Kerdijk, Laurens (2020) Simulating Sn Ion Collisions on 4dn Targets. Bachelor's Thesis, Physics.
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Abstract
A projectile-target collision can be described by the Binary Collision Approximation, which uses subsequent application of single binary collisions. Single elastic collisions can be depicted with Newton diagrams, in which it becomes clear that there is a maximum scattering angle, as well as two scattering energy solutions when mp > mt. From these diagrams it is also evident that only one scattering energy solution is valid when mp < mt instead, while the recoil energy always has one solution for elastic collisions. Furthermore, SRIM and SDTrimSP were used to simulate 14 KeV 120Sn ions impinging on 4dn targets, which range from Y to Cd, with a 5° angle of incidence from the surface normal. Backwards sputtered particles were investigated with energy-count distributions. The results of both simulations show symmetric distributions around the surface normal of the target solid. Most sputtered particles have low energies in the range of 0 to 40 eV. SRIM shows peak and energy cutoff shifting while SDTrimSP does not. The number of counts was found to increase for heavier targets for both simulation packages. Even though the energy-count distributions from SDTrimSP are broader, SRIM generally records more sputter counts close to the xy plane for 4dn targets.
| Item Type: | Thesis (Bachelor's Thesis) |
|---|---|
| Supervisor name: | Hoekstra, R.A. and Schlatholter, T.A. |
| Degree programme: | Physics |
| Thesis type: | Bachelor's Thesis |
| Language: | English |
| Date Deposited: | 20 Aug 2020 19:49 |
| Last Modified: | 20 Aug 2020 19:49 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/23161 |
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