Download SIMNRA User's Guide - Max-Planck

IPP 9/113
Matej Mayer
SIMNRA User’s Guide
April 1997
Abstract
This report describes the use of the program SIMNRA and the physical concepts implemented therein. SIMNRA is a Microsoft Windows 95 / Windows NT program for the
simulation of back- or forward scattering spectra for ion beam analysis with MeV ions.
SIMNRA is mainly intended for the simulation of spectra with non-Rutherford backscattering cross-sections, nuclear reactions and elastic recoil detection analysis (ERDA). About
300 different non-Rutherford and nuclear reaction cross-sections for incident protons,
deuterons, 3 He and 4 He-ions are included. SIMNRA can calculate spectra for any iontarget combination including incident heavy ions and any geometry including arbitrary
foils in front of the detector. SIMNRA uses the Andersen-Ziegler values for the stopping
powers of swift and heavy ions and Chu energy loss straggling. Additionally SIMNRA can
calculate the effects of dual scattering. Data fitting (layer thicknesses, compositions etc.)
is possible by means of the Simplex algorithm.