Current densities measured in human models exposed to 60-Hz electric fields
This paper gives current densities measured in homogeneous grounded human models exposed to vertical, 60-Hz electric fields. The methods used for these measurements were validated by measuring the current densities induced in a grounded hemisphere and in a grounded prolate hemispheroid; agreement between measurement and theory was good. For an unperturbed field strength of 10 kV/m, current densities measured in the human chest were in the range 125-300 nA/cmS. A strong horizontal current-density enhancement was observed in the axillae, with peak values of about 400 nA/cmS. The vertical current density in the arms, when held downward, was in the opposite direction to that in the chest. Current densities in the abdomen, pelvis, and legs were a strong function of whether the body was grounded through one or both feet. With one foot grounded, the horizontal current density in the lower pelvic region, just above the crotch, was 770 nA/cmS. This value was the largest of those measured in the head, arms, or torso of the human model. Scaling factors derived from these data and similar data for animals will provide a quantitative basis for comparing animal and human exposure to 60-Hz electric fields. In addition, current-density data given in this paper can be directly extrapolated to higher frequencies, at least to 1 MHz. 29 references, 8 figures, 3 tables.
- Research Organization:
- Pacific Northwest Lab., Richland, WA
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6036832
- Journal Information:
- Bioelectromagnetics (N.Y.); (United States), Vol. 6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRIC FIELDS
BIOLOGICAL EFFECTS
ABDOMEN
ARMS
BIOLOGICAL MODELS
CHEST
CURRENT DENSITY
EXPERIMENTAL DATA
HEAD
LEGS
PELVIS
BODY
BODY AREAS
DATA
INFORMATION
LIMBS
NUMERICAL DATA
560400* - Other Environmental Pollutant Effects