Formulations for Numerical Dosimetry of Currents Induced in the Human Body by ELF Magnetic Fields

Abstract : The fields induced in the human body by ELF electromagnetic fields are extremely weak, and hence very difficult to measure; therefore numerical dosimetry is an important issue. The most used formulation of magnetically induced fields is the phi-a formulation, which takes benefit of the particular features of the human body [1,2] : the displacement currents and the reaction field may be neglected for low frequencies (less than 1 MHz). However, this formulation requires as source term a magnetic vector potential, which is difficult to obtain from measurements of the magnetic field. This requirement can be a problem in practical situations where an accurate model of the radiating source is not available. In this work, we propose a new t-b formulation for ELF numerical dosimetry which, under the same assumptions of phi-a formulation, allows to compute the induced fields by taking as source term directly b. As in the phi-a formulation, the computation domain is bounded to the human body.
Type de document :
Communication dans un congrès
BIOEM, Jun 2009, Davos, Switzerland. p74 (431-432), 2009
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https://hal.archives-ouvertes.fr/hal-00399156
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Soumis le : jeudi 25 juin 2009 - 17:20:49
Dernière modification le : vendredi 26 octobre 2018 - 10:28:44

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  • HAL Id : hal-00399156, version 1

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Riccardo Scorretti, Ronan Perrussel, Damien Voyer, Noël Burais, Laurent Nicolas. Formulations for Numerical Dosimetry of Currents Induced in the Human Body by ELF Magnetic Fields. BIOEM, Jun 2009, Davos, Switzerland. p74 (431-432), 2009. 〈hal-00399156〉

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