Results 21 to 30 of about 10,475,616 (145)

Modeling and Measuring of Light Shift in Optically Pumped Atomic Magnetometers

IEEE Photonics Journal
The light shift is a significant error source of optically pumped atomic magnetometers (OPAMs), requiring accurate calculation or measurement to assess its impact on the accuracy of OPAMs.
Yuntian Zou, Xiangyang Zhou, Jiali Liu, Chi Fang, Jinghong Xu, Wei Quan, Liwei Jiang   +6 more
doaj   +1 more source

ANALYSIS OF FINE STRUCTURE OF CHERT AND BIF BY MEASUREMENT OF HIGH RESOLUTION MAGNETIC FIELD AND SCANNING X-RAY ANALYZED MICROSCOPE [PDF]

, 1997
P(論文)The fine structure of chert and BIF was analyzed by magnetic measurement and Scanning X-ray Analyzed Microscope. The magnetic study was done by the HFD system of magnetic field analysis with high Tc (superconducting critical temperature) SQUID.
タカノ, マサオ, シライ, コタロウ, ホリイ, マサエ, SHIRAI, Kotaro, HORII, Masae, サカイ, ヒデオ, フナキ, ミノル, TAKANO, Masao, SAKAI, Hideo, FUNAKI, Minoru   +9 more
core   +1 more source

Optimization and Analysis of Tangential Component Orientations in OPM-MEG Sensor Array

Bioengineering
Optically pumped magnetometers (OPMs) have brought a transformative advancement to magnetoencephalography (MEG), enabling flexible, noncryogenic, and wearable neuroimaging systems.
Wenli Wang, Fuzhi Cao, Nan An, Wen Li, Chunhui Wang, Zhenfeng Gao, Min Xiang, Xiaolin Ning   +7 more
doaj   +1 more source

Finite Element Analysis of Metal Weapons in a Time-domain Transient Magnetic Field [PDF]

, 2010
A method of secondary magnetic field analysis of metal objects in time-domain transient magnetic field is established by modification of finite element analysis.
Pati, Prasanta, Mather, Peter
core   +4 more sources

Environment-Driven Synthetic Baseline Analysis and Optimization in Joint Measurement OPM-MEG Arrays

Bioengineering
Optically pumped magnetometer-based magnetoencephalography (OPM-MEG), with its flexible sensor configuration and wide range of application scenarios, has become a powerful complement to conventional superconducting quantum interference device ...
Wenli Wang, Jianxin Yang, Weinan Xu, Fuzhi Cao, Nan An, Zhenfeng Gao, Min Xiang, Wen Li   +7 more
doaj   +1 more source

Acoustic wave propagation in the solar sub-photosphere with localised magnetic field concentration: effect of magnetic tension [PDF]

, 2009
Aims: We analyse numerically the propagation and dispersion of acoustic waves in the solar-like sub-photosphere with localised non-uniform magnetic field concentrations, mimicking sunspots with various representative magnetic field configurations ...
Shelyag, S., Thompson, Michael John, Zharkov, Sergei, Zharkov, S., M. J. Thompson, Fedun, V., S. Zharkov, Shelyag, Sergiy, Erdélyi, Robert, Erdelyi, R., R. Erdélyi, S. Shelyag, V. Fedun, Thompson, M.J., Fedun, Viktor   +14 more
core   +1 more source

Suppressing laser-power noise with a multifunctional liquid crystal polarization grating in miniaturized optically pumped magnetometers

Microsystems & Nanoengineering
Optically pumped magnetometers (OPMs) enable high-resolution biomagnetic imaging, yet conventional single-beam designs are constrained by bulky, alignment-intensive polarization optics and susceptibility to laser-power noise.
Zhibo Cui, Xu Xiao, Zinan Wei, Zhimou Fu, Kun Huang, Liangsong Pei, Xiangyang Zhou, Zhen Chai, Dongbi Bai   +8 more
doaj   +1 more source

Alleviating optical pumping inhomogeneity using a polarization-encoded metasurface in NMR co-magnetometers

Microsystems & Nanoengineering
In nuclear magnetic resonance (NMR) co-magnetometers, the non-uniform transverse energy distribution of the pumping Gaussian beam can result in substantial optical pumping inhomogeneity and decoherence of atomic spins, which hinder the improvement of the
Yan Xu, Zhen Chai, Mingke Jin, Rui Wang, Siyu Dai, Jing Qin, Jianli Li   +6 more
doaj   +1 more source

Multimodal Phase-Space Dynamics Fusion for Robust Ischemia Screening: An Edge-AI Paradigm with SERF Magnetocardiography

Biosensors
Background: Myocardial ischemia (MI) is a major cause of morbidity and mortality worldwide and requires timely and reliable detection. Although Spin-Exchange Relaxation-Free (SERF) magnetocardiography (MCG) provides femtotesla-level sensitivity for ...
Keyi Li, Xiangyang Zhou, Yifan Jia, Ruizhe Wang, Yidi Cao, Jiaojiao Pang, Rui Shang, Yadan Zhang, Yangyang Cui, Dong Xu, Min Xiang   +10 more
doaj   +1 more source

Three-axis magnetic field measurement based on dual-pump polarization with high sensitivity and orthogonality

Results in Physics, 2023
An optically pumped magnetometer (OPM) for three-axis magnetic field measurement is demonstrated based on dual-pump polarization in a time-sharing regime.
Siran Li, Bozheng Xing, Xiujie Fang, Kun Wang, Yanan Gao, Quan Wei, Bangcheng Han   +6 more
doaj   +1 more source