Results 101 to 110 of about 3,295 (205)

A Novel Strategy for Improving the Aeromagnetic Compensation Performance of Helicopters

Sensors, 2018
An aeromagnetic survey is an important method in magnetic anomaly detection and geophysical prospecting. The magnetic field is typically measured by optically pumped magnetometers (OPM) installed on the aircraft.
Luzhao Chen, Peilin Wu, Wanhua Zhu, Yongqiang Feng, Guangyou Fang   +4 more
doaj   +1 more source

Optically pumped alkali magnetometers for biomedical applications [PDF]

Europhysics News, 2012
20 Optically pumped atomic magnetometers measure the Larmor frequency νL at which the bulk magnetization of a spin-polarized alkali metal vapour in a glass cell precesses around the field of interest B → 0. The precession frequency is related to the modulus of the magnetic field by νL=(γ/2π)|B → 0|, where γ/2π≈3.5Hz/nT for 133Cs, so that the magnetic ...
openaire   +1 more source

Technologies for equine welfare and performance monitoring under field conditions – Where do we stand?

Equine Veterinary Journal, EarlyView.
Abstract The need for comprehensive equine welfare assessments has become particularly evident amid ongoing debates about the social licence to operate in equestrian sports. During exercise, multiple physiological systems, principally the cardiovascular, respiratory, muscular, thermoregulatory, endocrine, and locomotory systems, undergo complex ...
Rhana Mackie Aarts, Esther W. Siegers, Filipe M. Serra Braganca, P. René van Weeren   +3 more
wiley   +1 more source

Facilitating cognitive neuroscience research with 80-sensor optically pumped magnetometer magnetoencephalography (OPM-MEG)

NeuroImage
Recent advancements in optically pumped magnetometer magnetoencephalography (OPM-MEG) make it a promising alternative to conventional SQUID-MEG systems.
Wei Xu, Pan Liao, Miao Cao, David J. White, Bingjiang Lyu, Jia-Hong Gao   +5 more
doaj   +1 more source

Dual channel self-oscillating optical magnetometer

, 2009
We report on a two-channel magnetometer based on nonlinear magneto-optical rotation in a Cs glass cell with buffer gas. The Cs atoms are optically pumped and probed by free running diode lasers tuned to the D$_2$ line.
Acosta, Alexandrov, Andreeva, Belfi, Belfi, Bell, Beverini, Bloom, Budker, Cohen-Tannoudji, Dehmelt, Dupont-Roc, G. Bevilacqua, Graf, Guzman, Higbie, J. Belfi, K. Khanbekyan, L. Moi, Ledbetter, Romalis, S. Cartaleva, Savukov, Savukov, Savukov, Schwindt, Suter, V. Biancalana, Wynands, Xu, Y. Dancheva   +30 more
core   +1 more source

Control of Covalent Bond Enables Efficient Magnetic Cooling

Advanced Materials, Volume 38, Issue 7, 2 February 2026.
Giant and reversible magnetocaloric effect (MCE) is achieved by tuning covalency through sub‐unit‐cell chemical engineering, establishing a novel design principle for effective hysteresis control in magnetocaloric materials. Abstract Magnetic cooling, harnessing the temperature change in matter when exposed to a magnetic field, presents an energy ...
Xin Tang, Yoshio Miura, Noriki Terada, Enda Xiao, Shintaro Kobayashi, Allan Döring, Terumasa Tadano, Andres Martin‐Cid, Takuo Ohkochi, Shogo Kawaguchi, Yoshitaka Matsushita, Tadakatsu Ohkubo, Tetsuya Nakamura, Konstantin Skokov, Oliver Gutfleisch, Kazuhiro Hono, Hossein Sepehri‐Amin   +16 more
wiley   +1 more source

A plateau in the sensitivity of a compact optically pumped atomic magnetometer

AIP Advances, 2014
In a compact optically pumped atomic magnetometer (OPAM), there is a plateau in the sensitivity where the dependence of the sensitivity on pumping power is small compared with that predicted by the uniform polarization model. The mechanism that generates
Natsuhiko Mizutani, Kazuhisa Okano, Kazuhiro Ban, Sunao Ichihara, Akira Terao, Tetsuo Kobayashi   +5 more
doaj   +1 more source

Dynamic effects in nonlinear magneto-optics of atoms and molecules

, 2004
A brief review is given of topics relating to dynamical processes arising in nonlinear interactions between light and resonant systems (atoms or molecules) in the presence of a magnetic field.Comment: 15 pages, 11 ...
Aleksandrov, Aleksandrov, Aleksandrov, Aleksandrov, Aleksandrov, Andreeva, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Bell, Bell, Blushs, Budker, Budker, Budker, Budker, Cheron, Cheron, Cohen-Tannoudji, Cohen-Tannoudji, Cohen-Tannoudji, Derek F. Kimball, Dmitry Budker, Dodd, Ducloy, Dupont-Roc, Dyakonov, Evgeniy B. Alexandrov, Failache, Ferber, Geremia, Gilles, Hack, Hahn, Jacobs, Kawall, Lange, Lobodzin´ski, Lobodzin´ski, Majumder, Malakyan, Marcis Auzinsh, Martinelli, Matsko, Nasyrov, Nasyrov, Nguyen, Novikov, Okunevich, Okunevich, Regan, Rochester, Rochester, Romalis, Simon M. Rochester, Suter, Suter, Valeriy V. Yashchuk, Wallenstein, Xu, Xu, Yashchuk   +68 more
core   +1 more source

Improved Limits on Spin-Mass Interactions

, 2018
Very light particles with CP-violating couplings to ordinary matter, such as axions or axion-like particles, can mediate long-range forces between polarized and unpolarized fermions.
Almasi, Attaallah, Lee, Junyi, Romalis, Michael   +2 more
core   +1 more source

Comparison of discharge lamp and laser pumped cesium magnetometers [PDF]

, 2018
We have performed a comparison of laser (LsOPM) and lamp (LpOPM) pumped cesium vapor magnetometers. Although the LsOPM operated 50% above its shot-noise limit we found an intrinsic sensitivity of 15 fT/√Hz and 25 fT/√Hz for the LsOPM and the LpOPM ...
Groeger, S., Pazgalev, A., Weis, A.
core