Simulation research on electromagnetic field and temperature fields of nuclear electromagnetic pulse acting on human model

Shixin WANG; Mai LU

doi:10.11889/j.1000-3436.2023-0053

Journal of Radiation Research and Radiation Processing, Volume. 42, Issue 3, 030602(2024)

Simulation research on electromagnetic field and temperature fields of nuclear electromagnetic pulse acting on human model

Shixin WANG and Mai LU^*

Author Affiliations

Key Laboratory of Opto-Electronic Technology and Intelligent Control of Ministry of Education, Lanzhou Jiaotong University，Lanzhou 730070，China

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Figures & Tables(14)

Fig. 1. (a) Three stages of nuclear electromagnetic pulse; (b) NEMP waveform of E1 stage

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Fig. 2. Spectrum analysis: (a) Fourier series harmonic component, (b) Fourier series composite curves

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Fig. 3. Dipole antenna model

Fig. 4. Human model

Fig. 5. SAR value verification: (a) calculation domain of verification; (b) comparision of calculated SAR values with reference [32]

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Fig. 6. Human electromagnetic field distribution: (a) electric field intensity at 1 km; (b) electric field intensity at 10 km; (c) magnetic field intensity at 1 km; (d) magnetic field intensity at 10 km

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Fig. 7. Distribution of SAR in human body at varied distance

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Fig. 8. Temperature distribution in human tissues: (a), (c) 1 km head section and trunk; (b), (d) 10 km head section and trunk

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Fig. 9. Temperature rise in body tissues with exposure time (color online)

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Fig. 10. Dependence of brain temperature changes with exposure time at different frequencies (color online)

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Table 1. Amplitude and phase of each harmonic component
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Table 1. Amplitude and phase of each harmonic component
谐波分量
Harmonic component
1 2 3
幅度Amplitude / (V∙m^-1) 15 883.0 8 828.5 5 889.5
相位Phase / (°) -63.65 -84.46 84.22

Table 2. Dielectric constant and conductivity of human tissues at different frequencies

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Table 2. Dielectric constant and conductivity of human tissues at different frequencies

频率 / MHz Frequency	组织 Tissue	相对介电常数 Relative permittivity	电导率 / (S∙m^-1) Conductivity
10	头皮Scalp	361.66	0.197 32
	颅骨Skull	36.772	0.042 822
	大脑Brain	267.165	0.707 467 5
	躯干Trunk	201.095 4	0.390
20	头皮Scalp	209.22	0.289 53
	颅骨Skull	24.917	0.048 915
	大脑Brain	178.86	0.774 1
	躯干Trunk	118.364 92	0.500 932
30	头皮Scalp	152.94	0.341 68
	颅骨Skull	20.939	0.052 468
	大脑Brain	140.39	0.816 117 5
	躯干Trunk	91.585 72	0.522 897 2

Table 3. Thermal properties of different biological tissues of the human model

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Table 3. Thermal properties of different biological tissues of the human model

组织 Tissue	$ρ / (k g ∙ m^{- 3})$	$k$ / $(W ∙ {(m ∙ ℃)}^{- 1})$	$C$ / $(J ∙ {(k g ∙ ℃)}^{- 1})$	$Q_{m e t} / (W ∙ m^{- 3})$	$ω_{b}$ / $s^{- 1}$
头皮Scalp	1 125	0.42	3 500	1 620	0.02
颅骨Skull	1 990	0.37	3 100	610	0.000 46
大脑Brain	1 038	0.53	3 650	7 100	0.008 83
躯干Trunk	1 169	0.412	2 960	911	0.003

Table 4. Maximum electric and magnetic field intensities in different tissues

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Table 4. Maximum electric and magnetic field intensities in different tissues

距离 / km Distance	组织名称 Tissue	电场强度峰值 / (V∙m^-1) Peak value of electric field	磁场强度 / (A∙m^-1) Magnetic field
1	头皮Scalp	3.25	0.39
	颅骨Skull	88.80	0.39
	大脑Brain	0.73	0.39
	躯干Trunk	53.20	0.58
10	头皮Scalp	0.33	0.04
	颅骨Skull	8.90	0.04
	大脑Brain	0.72	0.04
	躯干Trunk	5.30	0.06

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Shixin WANG, Mai LU. Simulation research on electromagnetic field and temperature fields of nuclear electromagnetic pulse acting on human model[J]. Journal of Radiation Research and Radiation Processing, 2024, 42(3): 030602

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