Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Dancheva, Yordanka"'
We introduce a methodology to calibrate in situ a set of coils generating bi- or tri-axial magnetic fields, at frequencies where a calibration performed under static conditions would be inaccurate. The coil constants are determined in a two-step proc
Externí odkaz:
http://arxiv.org/abs/2404.14574
Autor:
Bevilacqua, Giuseppe, Biancalana, Valerio, Dancheva, Yordanka, Fregosi, Alessandro, Napoli, Gaetano, Vigilante, Antonio
Publikováno v:
Optics Express Vol. 29, Issue 23, pp. 37081-37090 (2021)
A recently introduced tuning-dressed scheme makes a Bell and Bloom magnetometer suited to detect weak variations of a radio-frequency (RF) magnetic field. We envisage the application of such innovative detection scheme as an alternative (or rather as
Externí odkaz:
http://arxiv.org/abs/2107.06819
Publikováno v:
Journal of Physics: Conference Series, Volume 1859, XXI International Conference and School on Quantum Electronics 21-25 September 2020
The magnetic dressing phenomenon occurs when spins precessing in a static field (holding field) are subject to an additional, strong, alternating field. It is usually studied when such extra field is homogeneous and oscillates in one direction. We st
Externí odkaz:
http://arxiv.org/abs/2104.07400
Autor:
Bevilacqua, Giuseppe, Biancalana, Valerio, Dancheva, Yordanka, Fregosi, Alessandro, Vigilante, Antonio
Publikováno v:
Applied Physics B volume 127, Article number: 128 (2021)
The dynamic response of a parametric system constituted by a spin precessing in a time dependent magnetic field is studied by means of a perturbative approach that unveils unexpected features, and is then experimentally validated. The first-order ana
Externí odkaz:
http://arxiv.org/abs/2104.00499
Autor:
Biancalana, Valerio, Cecchi, Roberto, Chessa, Piero, Mandalà, Marco, Bevilacqua, Giuseppe, Dancheva, Yordanka, Vigilante, Antonio
Publikováno v:
Instruments 2021, 5, 11
We characterize the performance of a system based on a magnetoresistor array. This instrument is developed to map the magnetic field, and to track a dipolar magnetic source in the presence of a static homogeneous field. The position and orientation o
Externí odkaz:
http://arxiv.org/abs/2101.11276
Autor:
Biancalana, Valerio, Cecchi, Roberto, Chessa, Piero, Bevilacqua, Giuseppe, Dancheva, Yordanka, Vigilante, Antonio
Publikováno v:
MDPI Instruments (1) 2021
We present the hardware of a cheap multi-sensor magnetometric setup where a relatively large set of magnetic field components is measured in several positions by calibrated magnetoresistive detectors. The setup is developed with the scope of mapping
Externí odkaz:
http://arxiv.org/abs/2009.00338
Autor:
Bevilacqua, Giuseppe, Biancalana, Valerio, Consumi, Marco, Dancheva, Yordanka, Rossi, Claudio, Stiaccini, Leonardo, Vigilante, Antonio
Publikováno v:
Journal of Magnetism and Magnetic Materials 2020
The presence of a weak remanence in Ultra-Low-Field (ULF) NMR sample containers is investigated on the basis of proton precession. The high-sensitivity magnetometer used for the NMR detection, enables simultaneously the measurement of the static fiel
Externí odkaz:
http://arxiv.org/abs/2006.16568
Magnetic Resonance Imaging (MRI) is universally acknowledged as an excellent tool to extract detailed spatial information with minimally invasive measurements. Efforts toward ultra-low-field (ULF) MRI are made to simplify the scanners and to reduce a
Externí odkaz:
http://arxiv.org/abs/1908.01283
Autor:
Bevilacqua, Giuseppe, Biancalana, Valerio, Dancheva, Yordanka, Stiaccini, Leonardo, Vigilante, Antonio
Nuclear magnetic resonance detection in ultra low field regime enables the measurement of different components of a spurious remanence in the polymeric material constituting the sample container. A differential atomic magnetometer detects simultaneou
Externí odkaz:
http://arxiv.org/abs/1904.01901
Publikováno v:
Phys. Rev. Applied 11, 024049 (2019)
We study the possibility of counteracting the line-broadening of atomic magnetic resonances due to inhomogeneities of the static magnetic field by means of spatially dependent magnetic dressing, driven by an alternating field that oscillates much fas
Externí odkaz:
http://arxiv.org/abs/1807.01274