🧲 Magnetic Mirror: Loss Cone, Bounce Period and Adiabatic Invariant (2D)

Side view of a magnetic bottle, a field that is weak in the middle and strong at both ends, in which a charged ion spirals along the field and bounces back from the strong-field end or escapes through it. Set the central field, the mirror ratio, the ion energy, the pitch angle and the length, and see whether the ion is trapped, its turning point, bounce period, gyroradius, magnetic moment and the trapped share of an isotropic gas. The Boris full-orbit bounce period and turning point, the adiabatic invariant, the energy drift and the loss cone are checked numerically, with four in-page numerical checks.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install