Ne21 = AtomicMassTable.GetElement(10, 21) H2 = AtomicMassTable.GetElement(1, 2) Ne20_mass = Ne20[3] H1_mass = H1[3] Ne21_mass = Ne21[3] H2_mass = H2[3] Kr = KINEMATICS() Kr.m[0] = Ne20_mass Kr.m[1] = H2_mass Kr.m[2] = Ne21_mass Kr.m[3] = H1_mass Kr.K0 = 100 Kr.Eex2 = 0 Kr.Eex3 = 0 lab2 = [] K2 = [] def ReturnLines(theta=30): degree = math.pi / 180 Kr.calculate(theta * degree, 0) MagneticFieldB = 2 tr2 = HELIOS.trajectory(Kr.V2, Kr.thetalab2 * degree, 10, Kr.m[2], MagneticFieldB) tr3 = HELIOS.trajectory(Kr.V3, Kr.thetalab3 * degree, 1, Kr.m[3], MagneticFieldB) return tr2, tr3