Journal of Radiation Research and Radiation Processing ›› 2020, Vol. 38 ›› Issue (2): 51-63.doi: 10.11889/j.1000-3436.2020.rrj.38.020701

• RADIATION INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

Numerical simulation of electromagnetic exposure of rats using elliptically polarized waves

LI Mengda,WANG Xianghui,ZHANG Jie,QI Hongxin()   

  1. Laboratory of Biophysics, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
  • Received:2019-11-15 Revised:2020-03-11 Accepted:2020-03-11 Online:2020-04-20 Published:2020-04-22
  • Contact: QI Hongxin E-mail:flyerqhx@126.com
  • About author:LI Mengda (male) was born in June 1994, and graduated from University of Science & Technology Beijing in June 2016. Now he is a graduate student in East China Normal University, majoring in biophysics
  • Supported by:
    National Natural Science Foundation of China(31600675)

Abstract:

In this report, we performed numerical simulation of electromagnetic exposure in rats using elliptically polarized waves as the source. By comparing the whole-body specific absorption rate (WBASAR) of electromagnetic exposure for multiple incident directions, it was determined that the WBASAR of elliptically polarized waves change with the polarization state, and is affected by the incident direction and the direction of rotation. Comparing this result to the irradiation results for linearly polarized waves travelling in the same direction, it was determined that the WBASAR results for electromagnetic exposure for these two cases are different under the same incident power. Moreover, the discrepancy presents different characteristics depending on the incident direction of the wave source and the relative positional changes associated with the posture of the rat. In addition, factors such as the polarized nature of the wave source, the irradiation method, and the rat itself, also caused large differences in the distribution of the average specific absorption rate of important tissues in rats. Therefore, considering the exposure results for linearly and non-linearly polarized waves, the exposure dose can be more comprehensively evaluated. The calculations presented in this report provide a method and supplemental data for the evaluation of electromagnetic exposure dose in animals.

Key words: Electromagnetic exposure, Elliptically polarized wave, Linearly polarized wave, Finite-difference time-domain method, Specific absorption rate

CLC Number: 

  • TL72,Q64