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Low stray ELF magnetic field exposure system for in vitro study

✍ Scribed by Kenichi Yamazaki; Hideo Fujinami; Tsukasa Shigemitsu; Izumi Nishimura

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
233 KB
Volume
21
Category
Article
ISSN
0197-8462

No coin nor oath required. For personal study only.

✦ Synopsis

An exposure facility for wide application to cell exposure to an ELF (extremely low frequency) magnetic field was developed. It is suitable for conducting experiments under a high-intensity, variable-frequency magnetic field, on the biological effects of the ELF magnetic field in an in vitro study. The exposure system consists of Merritt's 4-square coil as a basic component to generate the required magnetic field intensity of 10 mT at 50 Hz with spatial field uniformity less than AE3% in a 400 mm cube. Concentric compensation coils are adopted to eliminate the effects of stray fields on sham (control) samples in the vicinity of the exposure system. The uniformity of the magnetic field in the exposure coil, the increase in the power supply capacity due to the existence of compensation coils, and the stray field estimation were investigated carefully. After fabricating the system, performance tests were carried out and all the characteristics were found to be satisfactory. In addition, the ideal configuration for a concentric coil system was proposed.

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