Motion of 50 particles in parallel electric and magnetics fields.
The Trajectories in Electric and Magnetic Fields model computes a family of trajectories of charges emitted from a point source isotropically and with the same energy. These trajectories create focal points and caustic surfaces meeting the symmetry line in conical cusps. The simulation enables users to study these trajectories in both crossed and parallel magnetic fields. The user can vary the initial particle velocity and the field strengths.
M. V. Berry, "A curious magnetic multifoliate caustic in the Green function," Eur. J. Phys., 2 p22-28 (1981).
C. Bracher and A. Gonzales, "Propagation of charged particle waves in a uniform magnetic field," Physical Review A 86, 022715 (2012)
The Trajectories in Electric and Magnetic Fields model was developed by Wolfgang Christian using the Easy Java Simulations (EJS) version 4.3.3 authoring and modeling tool.
You can examine and modify the compiled EJS model if you run the model (double click on the model's jar file), right-click within a plot, and select "Open EJS Model" from the pop-up menu. You must have EJS installed on your computer. Information about EJS is available at: <http://www.um.es/fem/Ejs/> and in the ComPADRE OSP Collection <http://www.compadre.org/OSP/>.