Citation
Modeling Slowing-Down Distributions of Beam Ions in Uniform Plasma

Material Information

Title:
Modeling Slowing-Down Distributions of Beam Ions in Uniform Plasma
Creator:
Seggebruch, Michael Walter Louis
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Charge exchange ( jstor )
Electrons ( jstor )
Ions ( jstor )
Modeling ( jstor )
Particle beams ( jstor )
Particle energy ( jstor )
Plasmas ( jstor )
Speed ( jstor )
Subroutines ( jstor )
Velocity ( jstor )
Genre:
Undergraduate Honors Thesis

Notes

Abstract:
Tri Alpha Energy will heat plasma in its C-2W experiment with beams of high energy ions, so models are created, tested, and/or implemented in code to understand how these ions will behave in plasma. Mark Sherlock’s monte-carlo method for modeling the collisional processes experienced by beam ions traveling through plasma is implemented in code and compared with analytic models. The analytic models and Sherlock’s method yield consistent results, so Sherlock’s method is deemed physically valid and used in code designed to model the slowingdown distributions of beam ions in ideal plasma. The speed distributions produced by the code are consistent with known and derived Fokker-Planck equations that model these slowing-down distributions at steady state, indicating the physicality of both the analytic and numeric models. To improve the accuracies of the analytic and numeric models, both are modified to include fast ion charge exchange events. Again, the models produce mostly consistent results. The Takizuka-Abe method for numerically modeling collisional processes is also validated, and code using the method to model slowing-down distributions of beam ions yields results consistent with the code written using Sherlock’s method. Finally, the code utilizing the Takizuka-Abe method is parallelized for increased speed. ( en )
General Note:
Awarded Bachelor of Arts, summa cum laude, on May 2, 2017. Major(s): Physics, Mathematics
General Note:
College or School: College of Liberal Arts and Sciences
General Note:
Advisor: Hendrik J. Monkhorst. Advisor Deptarment or School: Chemistry

Record Information

Source Institution:
University of Florida
Holding Location:
University of Florida
Rights Management:
Copyright Michael Walter Louis Seggebruch. Permission granted to the University of Florida to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.

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.-Honors Thesis Submission Form (For Office Use Only) Major: ______ Designation : ____ Graduation Term : __ Name:Michael Seggebruch UFID:93214215 Additional Authors: Email:seggy@ufl.edu Major:Physics Advisor Name:Hendrik Monkhorst Advisor Email:monkhorst@qtp.ufl.edu Advisor Department:Physics Thesis Title:Modeling Slowing-Down Distributions of Beam Ions in Uniform Plasma Abstract (200 words max): Tri Alpha Energy will heat plasma in its C-2W experiment with beams of high energy ions, so models are created, tested, and/or implemented in code to understand how these ions will behave in plasma. Mark Sherlock's monte-carlo method for modeling the collisional processes experienced by beam ions traveling through plasma is implemented in code and compared with analytic models. The analytic models and Sherlock's method yield consistent results, so Sherlock's method is deemed physically valid and used in code designed to model the slowing-down distributions of beam ions in ideal plasma. The speed distributions produced by the code are consistent with known and derived FokkerPlanck equations that model these slowing-down distributions at steady state, indicating the physicality of both the analytic and numeric models. To improve the accuracies of the analytic and numeric models, both are modified to include fast ion charge exchange events. Again, the models produce mostly consistent results. The Takizuka-Abe method for numerically modeling collisional processes is also validated, and code using the method to model slowing-down distributions of beam ions yields results consistent with the code written using Sherlock's method. Finally, the code utilizing the Takizuka-Abe method is parallelized for increased speed.

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