Abstract
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.
| Original language | English |
|---|---|
| Journal | Japanese Journal of Applied Physics |
| Volume | 50 |
| Issue number | 11 PART 1 |
| DOIs | |
| Publication status | Published - Nov 2011 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Magnetic field mapping and biaxial vector operation for biomagnetic applications using high-sensitivity optically pumped atomic magnetometers. / Taue, Shuji; Sugihara, Yasuyuki; Kobayashi, Tetsuo; Ishikawa, Kiyoshi; Kamada, Keigo.
In: Japanese Journal of Applied Physics, Vol. 50, No. 11 PART 1, 11.2011.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetic field mapping and biaxial vector operation for biomagnetic applications using high-sensitivity optically pumped atomic magnetometers
AU - Taue, Shuji
AU - Sugihara, Yasuyuki
AU - Kobayashi, Tetsuo
AU - Ishikawa, Kiyoshi
AU - Kamada, Keigo
PY - 2011/11
Y1 - 2011/11
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=80755156468&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80755156468&partnerID=8YFLogxK
U2 - 10.1143/JJAP.50.116604
DO - 10.1143/JJAP.50.116604
M3 - Article
AN - SCOPUS:80755156468
VL - 50
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 11 PART 1
ER -