2011年11月
Magnetic Field Mapping and Biaxial Vector Operation for Biomagnetic Applications Using High-Sensitivity Optically Pumped Atomic Magnetometers
JAPANESE JOURNAL OF APPLIED PHYSICS
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- 巻
- 50
- 号
- 11
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1143/JJAP.50.116604
- 出版者・発行元
- JAPAN SOC APPLIED PHYSICS
Optically pumped alkali-metal atomic magnetometers are expected to be used not only for biomagnetic field measurements but also for magnetic resonance imaging because of their potential ultrahigh sensitivity. Here, we studied magnetic field mapping and biaxial vector operation using atomic magnetometers. A potassium atomic magnetometer was used in these measurements. First, we obtained sensor output signals by solving the Bloch equation. Next, we measured magnetic field distributions generated by a current dipole electrode that was placed in a spherical phantom, which simulated a group of simultaneously activated neurons in the human brain. We obtained vector contour maps of the magnetic field distributions from the dipoles oriented parallel and orthogonal to the pump laser beam and have found good agreement with theoretical magnetic field distributions. These results demonstrate practical applications of magnetic field mapping and biaxial vector operation using optically pumped atomic magnetometers. (C) 2011 The Japan Society of Applied Physics
- リンク情報
- ID情報
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- DOI : 10.1143/JJAP.50.116604
- ISSN : 0021-4922
- CiNii Articles ID : 40019072906
- Web of Science ID : WOS:000297697500043