Fig. 3From: Dependence of the confinement time of an electron plasma on the magnetic field in a quadrupole Penning trap(a) Schematic diagram of single ramp scanning mode (b) Electron signal fall-off with single ramp yields τ=72.89 ms at a magnetic field of 0.05 T (c) Schematic diagram of continuous ramps scanning mode (d) Electron signal fall-off with time for continuous ramping yields τ=72.32 ms at a magnetic field of 0.05 TBack to article page