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Preface
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Ions in Electromagnetic Traps
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List of Files
Contents
Thesis Objectives
List of Figures
List of Tables
List of Files
Preface
A Quick Tour of Program TrapApp
A Map of the Thesis
Theory and Simulation of a Single Paul-Trapped Ion
Motivation for Ion-Trapping
The Quadrupole Potential of Ion Traps
The Oscillating Paul Trap Potential
Motion in the Paul Trap: the Mathieu Equation
Classes of Solutions to Mathieu's Equation
Stability Regions for the 1-Dimensional Mathieu Equation
Stability Regions for a Single Ion in a Paul Trap
Approximate Solution of Mathieu Equations in Region A
Higher-Order Stability Regions
Theory and Simulation of a Collection of Paul-Trapped Ions
Equations of Motion for a Collection of Paul-Trapped Particles
Behaviors Observed for Paul-Trapping in Region A
Mathieu Regime
Chaotic Regime
Quasiperiodic Regime
Crystalline Phase
The Coulomb Coupling Parameter
Orientation of Two-Ion Crystals
Equilibrium Spacing for the Two-Ion Crystal
Investigation of Crystal Stability in Region A
Viscous Damping and Crystal Stability in Region A
The Mathieu Parameters and Crystal Stability in Region A
Response of Crystal to Sudden Changes in Mathieu Parameters
Response of Crystal to Continuous Changes in Mathieu Parameters
Behaviors Simulated for Paul-Trapping in Region B
Mathieu Regime
Chaotic Regime
Ordered Phase
Investigation of Crystal Stability in Region B
Theory and Simulation of Penning Traps
Motivation for Particle Confinement in Penning Traps
The Magnetic Field of Penning Traps
Stability Conditions for the Penning Trap
Behaviors Observed in Penning Trap Simulations
Methods and Theory of the Computer Simulation
Structure of the Simulation
System of Units
Finite Difference Methods
Choosing a Time Step
Micromotion Scaling
Einstein Scaling
Initial Conditions
Initialization of Position
Initialization of Velocity
Damping/Reservoir Interaction
Viscous Drag
Rescaling for Fixed Temperature
Monte Carlo Collisions with Background Gas
A Guide to Using Program TrapAppp
Menu Items
Buttons
Sliders
Mouse Clicks on Graph Objects
Epilogue
References
About this document ...
Wolfgang Christian
Fri May 12 10:36:01 EDT 1995