Abstract
A pulse-dilation framing camera is designed using a combination of magnetic lenses. The axial magnetic field distribution, electronic trajectory and imaging distribution on the object plane are simulated, and the influence of leakage magnetic slit on imaging performance of camera is analyzed. Results show that increasing the leakage magnetic slit improves the imaging performance away from axial area. At an acceleration energy of 3keV, the width of magnetic slit increases from 10 to 70mm, the relative imaging dispersion degree between on-axis and off-axis decreases from 0.27 to 0.06, and the relative mean deflection angle decreases from 65.17° to 59.44°. These features contribute towards further optimization of structural parameters of the magnetic lens and provide design guidelines for achieving a pulse-dilation framing camera with better imaging performance.
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