Comparison of radiation-induced charge sharing generated by heavy ion and pulsed laser

Charge sharing induced SEU and SEMT are investigated using heavy ion and pulsed laser. Measurement results are compared and it indicates pulsed laser could generate charge sharing similar to heavy ion. 3D-TCAD simulation is performed to investigate the factors to impact on pulsed laser induced chare sharing. Simulation results show that the beam spot size impact on charge sharing in the high laser energy while the variation of the calculated equivalent LET impact on charge sharing in the low laser energy.