Results 31 to 40 of about 34,201 (289)

Different sensitivities of two optical magnetometers realized in the same experimental arrangement [PDF]

, 2019
In this article, operation of optical magnetometers detecting static (DC) and oscillating (AC) magnetic fields is studied and comparison of the devices is performed. To facilitate the comparison, the analysis is carried out in the same experimental setup,
Popiołek, Kacper, Pustelny, Szymon, Put, Piotr   +2 more
core   +2 more sources

Disentangling the magnetic force noise contribution in LISA pathfinder [PDF]

, 2015
Magnetically-induced forces on the inertial masses on-board LISA Pathfinder are expected to be one of the dominant contributions to the mission noise budget, accounting for up to 40%.
Armano, M, Audley, H, Auger, G, Baird, J, Binetruy, P, Born, M, Bortoluzzi, D, Brandt, N, Bursi, A, Caleno, M, Cavalleri, A, Cesarini, A, Cruise, M, Danzmann, K, Diepholz, I, Dolesi, R, Dunbar, N, Ferraioli, L, Ferroni, V, Fitzsimons, E, Freschi, M, Gallegos, J, García Marirrodriga, C, Gerndt, R, Gesa, L I, Giardini, D, Gibert, F, Giusteri, R, Grimani, C, Harrison, I, Heinzel, G, Hewitson, M, Hollington, D, Hueller, M, Huesler, J, Inchauspé, H, Jennrich, O, Jetzer, P, Johlander, B, Karnesis, N, Kaune, B, Killow, C., Korsakova, N, Lloro, I, Maarschalkerweerd, R, Madden, S, Mance, D, Martin-Porqueras, F, Martín, V, Mateos, I, McNamara, P, Mendes, J, Mendes, L, Moroni, A, Nofrarias, M, Paczkowski, S, Perez, J A Romera, Perreur-Lloyd, M., Petiteau, A, Pivato, P, Plagnol, E, Prat, P, Ragnit, U, Ramos-Castro, J, Reiche, J, Robertson, D., Rozemeijer, H, Russano, G, Sarra, P, Schleicher, A, Slutsky, J, Sopuerta, C F, Sumner, T, Texier, D, Thorpe, J, Trenkel, C, Tu, H B, Vitale, S, Wanner, G, Ward, H., Waschke, S, Wass, P, Wealthy, D, Weber, W, Wen, S, Wittchen, A, Zanoni, C, Ziegler, T, Zweifel, P   +88 more
core   +1 more source

Advances in SQUID magnetometers [PDF]

IEEE Transactions on Electron Devices, 1980
The operation and noise limitations of de and RF SQUID's are outlined, and recent advances in their sensitivity are discussed. A model of the dc SQUID predicts an energy noise level per hertz referred to the SQUID of approximately 8 k_{B}TL/R \approx 8 k_{B}T(\piLC)^{1/2} , where L, R, and C are the SQUID inductance and the shunt resistance and ...
openaire   +2 more sources

Optical Magnetometer Array for Fetal Magnetocardiography

, 2012
We describe an array of spin-exchange relaxation free optical magnetometers designed for detection of fetal magnetocardiography (fMCG) signals. The individual magnetometers are configured with a small volume with intense optical pumping, surrounded by a ...
Bison, Budker, Chen, Happer, Hornberger, Johnson, Kligfield, Knappe, Kominis, Lancor, Li, Matthew Kauer, Pizzella, Robert Wyllie, Ronald T. Wakai, Thad G. Walker, Walker, Wyllie, Xia   +18 more
core   +1 more source

Inexpensive DIY Magnetometer Designs for Formal and Informal Investigations of Geomagnetic Sq Variations and Space Weather Events

IEEE Access
Simple magnetometers are the gateway instruments for exploring the geomagnetic field that can be used by hobbyists and teachers alike to monitor and study a variety of space weather phenomena.
Sten Odenwald, Hilarie Davis, Christina Milotte, Cris L. DeWolf   +3 more
doaj   +1 more source

Magnetic orientation system based on magnetometer, accelerometer and gyroscope

CAAI Transactions on Intelligence Technology, 2019
Magnetic orientation systems have widely been used by measuring the earth magnetic field and provide a pervasive source of directional information.
Zhiwei Chu, Chilai Chen, Youjiang Liu, Yingxian Wang, Xinhua Lin   +4 more
doaj   +1 more source

Optimizing NV magnetometry for Magnetoneurography and Magnetomyography applications

Frontiers in Neuroscience, 2023
Magnetometers based on color centers in diamond are setting new frontiers for sensing capabilities due to their combined extraordinary performances in sensitivity, bandwidth, dynamic range, and spatial resolution, with stable operability in a wide range ...
Chen Zhang, Chen Zhang, Jixing Zhang, Matthias Widmann, Magnus Benke, Michael Kübler, Durga Dasari, Thomas Klotz, Leonardo Gizzi, Leonardo Gizzi, Oliver Röhrle, Philipp Brenner, Jörg Wrachtrup   +12 more
doaj   +1 more source

Noninvasive Magnetic-Marking-Based Flow Metering with Optically Pumped Magnetometers

Applied Sciences, 2022
We present a noninvasive procedure that measures the flow velocity of a fluid by using polarized hydrogen nuclei in the fluid. The measurement procedure is based on a time-of-flight method where magnetic information is applied on the fluid with a ...
Leonhard Schmieder, Peter A. Koss, Armin Lambrecht, Frank Kühnemann   +3 more
doaj   +1 more source

Magnetocardiography with a modular spin-exchange relaxation free atomic magnetometer array

, 2011
We present a portable four-channel atomic magnetometer array operating in the spin exchange relaxation-free regime. The magnetometer array has several design features intended to maximize its suitability for biomagnetic measurement, specifically foetal ...
Bork J Hahlbohm H Klein R, G S Smetana, Goldberger A L, Li Z, Li Z, M Kauer, R T Wakai, R Wyllie, T G Walker, Wakai R T   +9 more
core   +1 more source

Rapid, Precise, and High-Sensitivity Acquisition of Paleomagnetic and Rock-Magnetic Data: Development of a Low-Noise Automatic Sample Changing System for Superconducting Rock Magnetometers [PDF]

, 2008
Among Earth sciences, paleomagnetism is particularly linked to the statistics of large sample sets as a matter of historical development and logistical necessity.
Baumgartner, Christopher T., Holt, John W., Kirschvink, Joseph L., Kopp, Robert E., Raub, Timothy D.   +4 more
core   +2 more sources