A short introduction to SRIM code
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A short introduction to SRIM code

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Little tutorial developed at Institut des Matériaux "Jean Rouxel" de Nantes (France). Three main simulation modes and advices to install it.

Little tutorial developed at Institut des Matériaux "Jean Rouxel" de Nantes (France). Three main simulation modes and advices to install it.

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A short introduction to SRIM code A short introduction to SRIM code Presentation Transcript

  • A short introduction to SRIM code JAVIER GARCÍA MOLLEJA
  • Download process Go to web page: http://srim.org/ You can read about both, software or science involved in the development. There are a different explanations about contents, errors and ion beam analysis. SRIM program can be downloaded from this link: http://srim.org/SRIM/SRIMLEGL.htm It is interesting to read instructions about installation, because the new version is the 2013 one. Many researchers always use the previous version (with all problems solved yet), 2008 one in this case.
  • Download process In this case SRIM 2008 was used. Once downloaded it is necessary change the type file: from .e to .exe. It is interesting create a new folder (with the name that you wish), because this file uncompress many others. SETUP.EXE must be used and you can create a new folder named SRIM located at C:/Program Files. Under Windows is very easy the installation, but be careful, W7 and its security protocols avoid some important steps during the process.
  • Simulation processes First step is double click on SRIM 2008.exe icon (you could create a direct access and place it in your desktop). There are a lot of tutorials and ‘read me’ files. It is interesting search and navigate on http://srim.org/SRIM/SRIMPICS/STOPPLOTS.htm to discover experimental plots. You could copy them and place those pictures on SRIMPICS folder.
  • Simulation processes
  • Stopping/Range tables We can determine ion ranges in one layer (composed by one or many elements). You can select ion element and energy range. This is the same for the target. You can select a compound (nuclear type, plastic type, steel type, biological type…). You must download a font file to see descriptions. Output file is in the units you want. WARNING: if you consider a gas or a compound it is necessary be sure if corrections is needed and select the corresponding buttons. Density of mixtures can be varied, but in general are fine. NEVER erase all numbers located at Stoich dialog (consider you are mistaken and abort the software –at least in 2006 version-).
  • Stopping/Range tables Equations considered are electronic and nuclear ones:
  • TRIM Calculation
  • TRIM Calculation Ion data and target data are the same that in the previous section. Now you can add an incidence angle to the ion. The new thing is that you can add many layers: to simulate for example, a superlattice. In the upper side you can select different types of simulations (ion distribution, detailed calculation, sputtering, varying ion energy, full cascade, damage cascade and damage with full calculation). Besides, you can select main plots are you interested in. In the lower side you must add a seed number and type the maximum number of ions, including plots depths.
  • TRIM calculation Calculation is based in Monte Carlo processes. Be careful with densities and data always present in Atom Stoich dialog.
  • TRIM Calculation You can observe many graphs and you can create many saving files located at SRIM Outpus folder. Selecting different types of calculation right side may be changed. Important data are ion ranges and their straggling, different mechanisms for energy loss and their contribution and sputtering yields and the ejection energy.
  • TRIM Calculation
  • Experimental Stopping Powers
  • Experimental Stopping Powers You can select H, He, and Li bombardment into any material. It is interesting search about the behavior of an element as target or this selected element as ion.