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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:15 |
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Conference: Bucharest University Faculty of Physics 2009 Meeting
Section: Biophysics; Medical Physics
Title:
Modeling electron trajectories under nonhomogeneous magnetic field
Authors:
Badescu Toma, Lacatus Daniela, Paraschiv Alin, and Simon Sabina
Affiliation:
Faculty of Physics - University of Bucharest
E-mail
Keywords:
Lorentz force, Hall sensor, electron trajectories, numerical model
Abstract:
We used a narrow electron beam tube to play with electrons acted on by the Lorentz force in a strong nonhomogeneous magnetic field. The magnetic field is produced by a multi-turn circular coil (winding number 154, 0.4 m in diameter). The electrons accelerated at 300 eV and 550 eV are propagated in radial direction. The magnetic flux density produced by the coil is controled by adjusting the DC current and correspondingly measured using a Hall sensor. Despite its apparent simplicity, predicting the electron trajectories in such a geometry is surprisingly complicated, and requires precise numerical techniques. We present a numerical model and detailed experimental results about electron trajectories, with potential applications to particle detectors and accelerators.
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