Gain narrowing effect of soft X-ray picoseconds framing camera

Temporal resolution of a soft X-ray picoseconds framing camera(XPFC) based on gated micro-channel plate (MCP) depends strong-nonlinearly on parameters of gating pulse (width, amplitude) and is much shorter than the gating pulse width, which the so-called “gain narrowing effect”. The temporal resolution and the gain narrowing effect exponent of the XPFC being gated by picoseconds electric pulse are computed and analyzed. So the estimated gain narrowing effect exponent is about 10.0 and the temporal resolution of the framing camera is about 1/3.16 times the width of the gating pulse. The simulations and experiments on the temporal resolution of the XPFC gated respectively by the gating pulse with (250 ps，-1 100 V) and (220 ps，-900 V) are presented. Simulation result of 78.8 ps and experi