Particle-in-cell simulacija trajektorije nabitega delca.
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 ```#!/usr/bin/python3 ``` ``` ``` ```import numpy as np ``` ```import matplotlib.pyplot as plt ``` ```from matplotlib import rc ``` ```rc('font',**{'family':'serif','serif':['Computer Modern']}) ``` ```rc('text', usetex=True) ``` ``` ``` ```from boris import * ``` ``` ``` ```B = lambda x: np.array([0.,0.,x[0]**2+x[1]**2]) ``` ```E = lambda x: np.array([0.,0.,0.]) ``` ``` ``` ```x0 = np.array([0.,-1.,0.]) ``` ```v0 = np.array([-0.2,2.5,0.]) ``` ``` ``` ```X,V = boris(x0,v0,E,B,1e-2, 100) ``` ```plot3(X) ``` ```rplot(X) ``` ``` ``` ```B = lambda x: np.array([0.,0.,1.]) ``` ```E = lambda x: np.array([-0.,0.8,0.]) ``` ```x0 = np.array([0.,0.,0.]) ``` ```v0 = np.array([0.,2.5,0.]) ``` ```X,V = boris(x0,v0,E,B,1e-2, 20) ``` ``` ``` ```plot3(X) ``` ```rplot(X,fname='statika.pdf') ``` ``` ```