SIMNRA user's guide
SIMNRA user's guide
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发表时间：
1997
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通讯作者：
Máté Mayer
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作者：
Máté Mayer
本文档描述了程序 SIMNRA 的使用以及其中实现的物理概念。 SIMNRA 是一个 MicrosoftWindows 程序，用于模拟 MeV 离子离子束分析的后向或前向散射光谱。 SIMNRA 用于模拟卢瑟福散射截面 (RBS)、非卢瑟福散射截面 (EBS)、核反应 (NRA)、轻重入射离子的弹性反冲检测分析 (ERDA) 以及中能离子散射 (MEIS) 的光谱。 SIMNRA 可以计算任何离子-目标组合的光谱，包括入射重离子和任何几何形状，包括后向散射、前向散射和透射几何形状。可以使用检测器前面的任意多层箔和样品前面的任意多层窗口（例如外部光束的出射窗口）。有几种不同的制动力数据集可供使用。能量损失离散的计算包括楚和杨对玻尔理论的修正，考虑了厚层中能量损失离散的传播。另外，可以近似计算多个小角度和多个大角度散射的影响以及表面和基底粗糙度。包括许多入射质子、氘核、3He-、4He-、6Li 和 7Li-离子的非卢瑟福和核反应截面。通过 Simplex 算法可以进行数据拟合（层厚度、成分等）。 OLE 自动化可以自动分析大量光谱并开发新应用。 SIMNRA 支持 IBA 数据格式 (IDF)，用于数据存储以及不同仿真程序之间的数据交换。由于 Microsoft Windows 图形用户界面，SIMNRA 易于使用：SIMNRA 充分利用了 Windows 的图形功能。 SIMNRA shell 扩展扩展了 Windows 资源管理器和 Windows 搜索的功能，从而允许 SIMNRA 无缝集成到 Windows 系统中。
This document describes the use of the program SIMNRA and the physical concepts implemented therein. SIMNRA is a MicrosoftWindows program for the simulation of backor forward scattering spectra for ion beam analysis with MeV ions. SIMNRA is intended for the simulation of spectra with Rutherford scattering cross-sections (RBS), non-Rutherford cross-sections (EBS), nuclear reactions (NRA), elastic recoil detection analysis (ERDA) with light and heavy incident ions, and medium energy ion scattering (MEIS). SIMNRA can calculate spectra for any ion-target combination including incident heavy ions and any geometry including backscattering, forward scattering, and transmission geometries. Arbitrary multi-layered foils in front of the detector and arbitrary multi-layered windows (such as exit windows for an external beam) in front of the sample can be used. Several different stopping power data sets are available. Energy loss straggling is calculated including the corrections by Chu and Yang to Bohr’s theory, energy loss straggling propagation in thick layers is taken into account. Additionally the effects of multiple small-angle and plural large angle scattering can be calculated approximately as well as surface and substrate roughness. Many non-Rutherford and nuclear reaction cross-sections for incident protons, deuterons, 3He-, 4He-, 6Liand 7Li-ions are included. Data fitting (layer thicknesses, compositions etc.) is possible by means of the Simplex algorithm. OLE automation allows automated analysis of large numbers of spectra and the development of new applications. SIMNRA supports the IBA data format (IDF) for data storage and exchange of data between different simulation programs. SIMNRA is easy to use due to the graphical Microsoft Windows user interface: SIMNRA makes full use of the graphics capacities of Windows. SIMNRA shell extensions extend the abilities of Windows Explorer and Windows Search, thus allowing a seamless integration of SIMNRA into the Windows system.