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Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Author: Chilom Alin-Nicolae-Romania Supervisor: V.A.Kuzmin 25.07.2014

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Content Introduction 1

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Content Introduction 1 Reciprocity principle 2

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Content Introduction 1 Reciprocity principle 2 SRIM and MSTAR 3

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Content Introduction 1 Reciprocity principle 2 SRIM and MSTAR 3 Results 4

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Content Introduction 1 Reciprocity principle 2 SRIM and MSTAR 3 Results 4 Conclusions 5

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction Interaction of energetic ions with matter is of great importance for modern industry and technology (including nanotechnology) due to a vast variety of applications ranging from aero-space to biomedical ones. Ion beams allow modifying various properties, such as:

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction Interaction of energetic ions with matter is of great importance for modern industry and technology (including nanotechnology) due to a vast variety of applications ranging from aero-space to biomedical ones. Ion beams allow modifying various properties, such as: � electric

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction Interaction of energetic ions with matter is of great importance for modern industry and technology (including nanotechnology) due to a vast variety of applications ranging from aero-space to biomedical ones. Ion beams allow modifying various properties, such as: � electric � magnetic

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction Interaction of energetic ions with matter is of great importance for modern industry and technology (including nanotechnology) due to a vast variety of applications ranging from aero-space to biomedical ones. Ion beams allow modifying various properties, such as: � electric � magnetic � optic

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction Interaction of energetic ions with matter is of great importance for modern industry and technology (including nanotechnology) due to a vast variety of applications ranging from aero-space to biomedical ones. Ion beams allow modifying various properties, such as: � electric � magnetic � optic � mechanic

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction Interaction of energetic ions with matter is of great importance for modern industry and technology (including nanotechnology) due to a vast variety of applications ranging from aero-space to biomedical ones. Ion beams allow modifying various properties, such as: � electric � magnetic � optic � mechanic � and even to synthesize new materials

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction Interaction of energetic ions with matter is of great importance for modern industry and technology (including nanotechnology) due to a vast variety of applications ranging from aero-space to biomedical ones. Ion beams allow modifying various properties, such as: � electric � magnetic � optic � mechanic � and even to synthesize new materials Ion beams are an unique tool to determine a composition and structure of materials.

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction A key quantity which determines changes of the properties is the stopping power.

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction A key quantity which determines changes of the properties is the stopping power. At present, there is no reliable theory for calculating the electronic stopping power in low velocity regime.

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction A key quantity which determines changes of the properties is the stopping power. At present, there is no reliable theory for calculating the electronic stopping power in low velocity regime. As a guidance in obtaining the electronic stopping powers at low energies, the principle of reciprocity has been proposed recently by Sigmund [Eur. Phys. J. D 47, 4554 (2008)].

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Introduction Introduction A key quantity which determines changes of the properties is the stopping power. At present, there is no reliable theory for calculating the electronic stopping power in low velocity regime. As a guidance in obtaining the electronic stopping powers at low energies, the principle of reciprocity has been proposed recently by Sigmund [Eur. Phys. J. D 47, 4554 (2008)]. The aim of this project is to check the correspondence of predictions obtained from most widely used computer codes, SRIM and MSTAR, to the principle of reciprocity.

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Reciprocity principle Reciprocity principle

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Reciprocity principle Reciprocity principle The reciprocity principle states that the electronic stopping cross section is the same whether projectile A with a velocity v hits the target B or the projectile B with the same velocity v hits target A.

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Reciprocity principle Reciprocity principle The reciprocity principle states that the electronic stopping cross section is the same whether projectile A with a velocity v hits the target B or the projectile B with the same velocity v hits target A. In order to use the principle of reciprocity one needs to subtract the nuclear stopping power from the total stopping power measured in an experiment.

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft Reciprocity principle Reciprocity principle The reciprocity principle states that the electronic stopping cross section is the same whether projectile A with a velocity v hits the target B or the projectile B with the same velocity v hits target A. In order to use the principle of reciprocity one needs to subtract the nuclear stopping power from the total stopping power measured in an experiment. The reciprocity principle has been extensively checked against comprehensive data collection by Helmut Paul [http://www.exphys.jku.at/stopping/], which collects stopping data for ions, targets and beam energies from literature.

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft SRIM and MSTAR SRIM

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft SRIM and MSTAR SRIM SRIM is the most widely used:

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft SRIM and MSTAR SRIM SRIM is the most widely used: � It provides both electronic and nuclear stopping, range of implanted ions and damage distributions for all ions across the whole periodic table using Monte Carlo method.

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft SRIM and MSTAR SRIM SRIM is the most widely used: � It provides both electronic and nuclear stopping, range of implanted ions and damage distributions for all ions across the whole periodic table using Monte Carlo method. � It has a section dedicated to fast calculating stopping and range tables.

Testing of SRIM and MSTAR computer codes from the point of view of reciprocity principle Draft SRIM and MSTAR SRIM SRIM is the most widely used: � It provides both electronic and nuclear stopping, range of implanted ions and damage distributions for all ions across the whole periodic table using Monte Carlo method. � It has a section dedicated to fast calculating stopping and range tables. � The interface is user friendly.