TY - GEN
T1 - An atomic magnetometer for brain activity imaging
AU - Baranga, Andrei Ben Amar
AU - Hoffman, Dan
AU - Xia, Hui
AU - Romalis, Michael V.
PY - 2005
Y1 - 2005
N2 - 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.
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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U2 - 10.1109/RTC.2005.1547485
DO - 10.1109/RTC.2005.1547485
M3 - Conference contribution
AN - SCOPUS:33751425372
SN - 0780391837
SN - 9780780391833
T3 - 2005 14TH IEEE-NPSS Real Time Conference
SP - 417
EP - 418
BT - 2005 14TH IEEE-NPSS Real Time Conference
T2 - 2005 14TH IEEE-NPSS Real Time Conference
Y2 - 4 June 2005 through 10 June 2005
ER -