Bioelectromagnetic Dose Characteristics in Bounded Wave Simulator under Nanosecond Pulse

In this paper, the bioelectromagnetic dose characteristics of a bounded wave simulator under nanosecond pulse were investigated. By electrostatic field simulation, the distribution of electric field in the bounded wave simulator under experimental conditions was analyzed. The results show that the local field enhancement in space is obvious. The electric field on the surface of the upper electrode under the loading voltage is obviously greater. Furthermore, the SAR value of bioelectromagnetic dose was analyzed. Under 1 pps working operation, 150 kV loading voltage and PML boundary condition, the SAR value is calculated to be $6\times 10^{-5}\ \mathbf{W}/\mathbf{kg}$ . Besides, the bioelectromagnetic dose under non-PML boundary condition was explored. The results show that the SAR value at high voltage electrode is maximal. The difference between the maximum and the minimum is 7 dB, which is much more than the dose deviation limit of 3 dB. The results above show that the bioelectromagnetic dose characteristics of the bounded wave simulator under nanosecond pulses are correlated with the position in the simulator. Biological experiments should be carefully designed according to the results of dose analysis.