An atomic magnetometer for brain activity imaging

Andrei Ben Amar Baranga, Dan Hoffman, Hui Xia, Michael V. Romalis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Magneto-encephalography (MEG) is extensively used for studies of brain functioning. We present a new multi-channel atomic magnetometer for MEG. The 256-channel magnetometer uses high-density K atoms and operates in a very low magnetic field produced by a human-size magnetic shielding. A cubic glass cell of 7 cm on the side located about 2 cm away from a human head contains a drop of K, N2 and 4He. Alkali-metal vapor is produced by warming the cell with hot air. Two 10 W lasers mounted outside the shields, optically pump and probe the vapor. A 16×16 photodiode array monitors the signals. Experimental results will be reported.

Original languageEnglish (US)
Title of host publication2005 14TH IEEE-NPSS Real Time Conference
Pages417-418
Number of pages2
DOIs
StatePublished - Dec 1 2005
Event2005 14TH IEEE-NPSS Real Time Conference - Stockholm, Sweden
Duration: Jun 4 2005Jun 10 2005

Publication series

Name2005 14TH IEEE-NPSS Real Time Conference
Volume2005

Other

Other2005 14TH IEEE-NPSS Real Time Conference
CountrySweden
CityStockholm
Period6/4/056/10/05

Fingerprint

magnetometers
brain
high temperature air
magnetic shielding
metal vapors
cells
alkali metals
photodiodes
vapors
pumps
heating
probes
glass
magnetic fields
lasers
atoms

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Baranga, A. B. A., Hoffman, D., Xia, H., & Romalis, M. V. (2005). An atomic magnetometer for brain activity imaging. In 2005 14TH IEEE-NPSS Real Time Conference (pp. 417-418). [1547485] (2005 14TH IEEE-NPSS Real Time Conference; Vol. 2005). https://doi.org/10.1109/RTC.2005.1547485
Baranga, Andrei Ben Amar ; Hoffman, Dan ; Xia, Hui ; Romalis, Michael V. / An atomic magnetometer for brain activity imaging. 2005 14TH IEEE-NPSS Real Time Conference. 2005. pp. 417-418 (2005 14TH IEEE-NPSS Real Time Conference).
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Baranga, ABA, Hoffman, D, Xia, H & Romalis, MV 2005, An atomic magnetometer for brain activity imaging. in 2005 14TH IEEE-NPSS Real Time Conference., 1547485, 2005 14TH IEEE-NPSS Real Time Conference, vol. 2005, pp. 417-418, 2005 14TH IEEE-NPSS Real Time Conference, Stockholm, Sweden, 6/4/05. https://doi.org/10.1109/RTC.2005.1547485

An atomic magnetometer for brain activity imaging. / Baranga, Andrei Ben Amar; Hoffman, Dan; Xia, Hui; Romalis, Michael V.

2005 14TH IEEE-NPSS Real Time Conference. 2005. p. 417-418 1547485 (2005 14TH IEEE-NPSS Real Time Conference; Vol. 2005).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - An atomic magnetometer for brain activity imaging

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AB - Magneto-encephalography (MEG) is extensively used for studies of brain functioning. We present a new multi-channel atomic magnetometer for MEG. The 256-channel magnetometer uses high-density K atoms and operates in a very low magnetic field produced by a human-size magnetic shielding. A cubic glass cell of 7 cm on the side located about 2 cm away from a human head contains a drop of K, N2 and 4He. Alkali-metal vapor is produced by warming the cell with hot air. Two 10 W lasers mounted outside the shields, optically pump and probe the vapor. A 16×16 photodiode array monitors the signals. Experimental results will be reported.

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Baranga ABA, Hoffman D, Xia H, Romalis MV. An atomic magnetometer for brain activity imaging. In 2005 14TH IEEE-NPSS Real Time Conference. 2005. p. 417-418. 1547485. (2005 14TH IEEE-NPSS Real Time Conference). https://doi.org/10.1109/RTC.2005.1547485