Results 111 to 120 of about 1,280 (179)

Optically pumped magnetometry in arbitrarily oriented magnetic fields

, 2017
Optically pumped atomic magnetometers (OPMs) offer highly sensitive magnetic measurements using compact hardware, offering new possibilities for practical precision sensors. Double-resonance OPM operation is well suited to unshielded magnetometry, due to
Griffin, P. F., Chalmers, I. C., Arnold, A. S., S. J. Ingleby, I. C. Chalmers, P. F. Griffin, O'Dwyer, C., Riis, E., Ingleby, S. J., E. Riis, C. O'Dwyer, A. S. Arnold   +11 more
core   +1 more source

Bedside Magnetocardiography with a Scalar Sensor Array

Sensors
Decades of research have shown that magnetocardiography (MCG) has the potential to improve cardiac care decisions. However, sensor and system limitations have prevented its widespread adoption in clinical practice. We report an MCG system built around an
Geoffrey Z. Iwata, Christian T. Nguyen, Kevin Tharratt, Maximilian Ruf, Tucker Reinhardt, Jordan Crivelli-Decker, Madelaine S. Z. Liddy, Alison E. Rugar, Frances Lu, Kirstin Aschbacher, Ethan J. Pratt, Kit Yee Au-Yeung, Stefan Bogdanovic   +12 more
doaj   +1 more source

Surface and chemical effects on 199Hg spin polarization relaxation in optically pumped magnetometers

Academia Quantum
Quantum spin magnetometry using optically pumped 199Hg has been successfully used in many fundamental physics experiments. A serious problem that has not been resolved is the instability of the 199Hg spin relaxation rate in atomic vapor cells ...
Steven K. Lamoreaux
doaj   +1 more source

Vehicle Detection using Drone-Mounted Optically Pumped Magnetometers

Magnetic sensing has applications in diverse technological domains including geology and geophysics, structural inspection, geospatial navigation, and vehicle detection and avoidance. At-range detection of large assets such as vehicles, specifically, can
Conroy, Joseph, Leslie, Patrick, Jacobs, Eddie, Mares, Jeremy W., Kang, Eunmo, Renshaw, Christopher K., Watson, Thomas   +6 more
core   +1 more source

Correcting heading errors in optically pumped magnetometers through microwave interrogation

We demonstrate how to measure in situ for heading errors of optically pumped magnetometers (OPMs) in the challenging parameter regime of compact vapor cells with imperfect optical pumping and high buffer gas pressure.
Kiehl, Christopher, Regal, Cindy A., Thiele, Tobias, Menon, Thanmay S., Hewatt, Dawson P., Knappe, Svenja   +5 more
core   +1 more source

Helium Optically Pumped Magnetometers Can Detect Epileptic Abnormalities as Well as SQUIDs as Shown by Intracerebral Recordings. [PDF]

eNeuro, 2023
Badier JM, Schwartz D, Bénar CG, Kanzari K, Daligault S, Romain R, Mitryukovskiy S, Fourcault W, Josselin V, Le Prado M, Jung J, Palacios-Laloy A, Romain C, Bartolomei F, Labyt E, Bonini F.   +15 more
europepmc   +1 more source

Optimizing longitudinal spin relaxation in miniaturized optically pumped magnetometers [PDF]

The microfabrication of cesium vapor cells for optically pumped magnetometry relies on optimization of buffer gas pressure in order to maximize atomic coherence time and sensitivity to external magnetic signals.
Sharp, O., Burt, D. P., Griffin, P. F., Dyer, S., McWilliam, A. P., Hunter, D., McGilligan, J. P., Riis, E., Mrozowski, M., Ingleby, S. J.   +9 more
core  

Comments on ``Optically Pumped Nuclear Magnetometer'' [PDF]

Review of Scientific Instruments, 1964
openaire   +1 more source

Development and optimization of optically pumped magnetometers for brain imaging [PDF]

Portable and compact optically pumped magnetometers (OPMs) offer new research possibilities that are not achievable with conventional systems (SQUIDs) for brain recordings based on magnetoencephalography (MEG).
Bezsudnova, Yulia
core  

Monitoring magnetic nanoparticle clustering and immobilization with thermal noise magnetometry using optically pumped magnetometers. [PDF]

Nanoscale Adv, 2023
Everaert K, Sander T, Körber R, Löwa N, Van Waeyenberge B, Leliaert J, Wiekhorst F.   +6 more
europepmc   +1 more source