Results 31 to 40 of about 96,670 (200)

How to build a magnetometer with thermal atomic vapor: a tutorial

New Journal of Physics, 2023
This article is designed as a step-by-step guide to optically pumped magnetometers based on alkali atomic vapor cells. We begin with a general introduction to atomic magneto-optical response, as well as expected magnetometer performance merits and how ...
Anne Fabricant, Irina Novikova, Georg Bison   +2 more
doaj   +1 more source

An Iterative Implementation of the Signal Space Separation Method for Magnetoencephalography Systems with Low Channel Counts

Sensors, 2023
The signal space separation (SSS) method is routinely employed in the analysis of multichannel magnetic field recordings (such as magnetoencephalography (MEG) data).
Niall Holmes, Richard Bowtell, Matthew J Brookes, Samu Taulu   +3 more
doaj   +1 more source

Moving Wearable Magnetoencephalography Measurement Study Based on Optically-pumped Magnetometer

Chinese Journal of Magnetic Resonance, 2022
Magnetoencephalography is a non-invasive technology for brain function imaging, which is of enormous value to brain science research and clinical application due to its ultra-high temporal and spatial trace resolution.
Chun-qiao CHEN, Xin ZHANG, Qing-qian GUO, Jia-yu XU, Xiao-yu FENG, Yan CHANG, Tao HU, Xiao-dong YANG   +7 more
doaj   +1 more source

Dependence on sensitivity patterns of bias fields for vector measurements using optically pumped vapor magnetometers

AIP Advances, 2020
The optical light shift effect is an all-optical technique to create magnetic bias fields to determine the vector components of the magnetic field using a scalar optically pumped magnetometer.
Janet W. Lou, Geoffrey A. Cranch
doaj   +1 more source

Biomagnetism: The First Sixty Years

Sensors, 2023
Biomagnetism is the measurement of the weak magnetic fields produced by nerves and muscle. The magnetic field of the heart—the magnetocardiogram (MCG)—is the largest biomagnetic signal generated by the body and was the first measured.
Bradley J. Roth
doaj   +1 more source

Multiparameter quantum sensing and magnetic communication with a hybrid dc and rf optically pumped magnetometer [PDF]

Physical Review Applied, 2023
We introduce and demonstrate a hybrid optically pumped magnetometer (HOPM) that simultaneously measures one dc field component and one rf field component quadrature with a single atomic spin ensemble.
M. Lipka, Aleksandra Sierant, C. Troullinou, M. Mitchell   +3 more
semanticscholar   +1 more source

Software program development of a high-precision magnetometer system for human-occupied vehicles [PDF]

Geoscientific Instrumentation, Methods and Data Systems
Cesium optically pumped magnetometers are widely used in geophysical exploration, environmental monitoring, and scientific research for magnetic field measurements.
Q. Zhang, Q. Zhang, K. Zhou, M. Deng, L. Huang, C. Li, Q. Zhang   +6 more
doaj   +1 more source

Alignment-Based Optically Pumped Magnetometer Using a Buffer-Gas Cell [PDF]

Physical Review Applied, 2023
Alignment-based optically pumped magnetometers (OPMs) are capable of measuring oscillating magnetic fields with high sensitivity in the fT/sqrt(Hz) range.
L. Rushton, L. Elson, A. Meraki, K. Jensen   +3 more
semanticscholar   +1 more source

Vector magnetocardiography using compact optically-pumped magnetometers

Heliyon, 2023
Optically pumped magnetometers can provide functionality for bio-magnetic field detection and mapping. This has attracted widespread attention from researchers in the biomedical science field. Magnetocardiography has been proven to be an effective method for examining heart disease.
Shengran Su, Zhenyuan Xu, Xiang He, Guoyi Zhang, Haijun Wu, Yalan Gao, Yueliang Ma, Chanling Yin, Yi Ruan, Kan Li, Qiang Lin   +10 more
openaire   +3 more sources

Optically Pumped Magnetometer and Its Application

semanticscholar   +2 more sources