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Oscillating Magnetic Fields: Magnetic Resonance

K. T. Hecht

Graduate texts in contemporary physicsJan 1, 20000 citations

Misalignment effects in magnetic resonance

David Thomas Pegg

By means of a theoretical approach recently developed by Pegg and Series (1970, 1973), the consequences of misalignment of the rotating field in magnetic resonance are investigated. Three main effects arise: a shift in the resonance frequency, a reduction in power broadening, and the appearance of 'multiple quantum' resonances at integral multiples of the rotating field frequency. For small misalignment angle theta , the misalignment shift is proportional to theta 4 and may be neglected in usual medium-precision experiments. The multiplicity of resonances should be readily detectable in optical pumping experiments.By means of a theoretical approach recently developed by Pegg and Series (1970, 1973), the consequences of misalignment of the rotating field in magnetic resonance are investigated. Three main effects arise: a shift in the resonance frequency, a reduction in power broadening, and the appearance of 'multiple quantum' resonances at integral multiples of the rotating field frequency. For small misalignment angle theta , the misalignment shift is proportional to theta 4 and may be neglected in usual medium-precision experiments. The multiplicity of resonances should be readily detectable in optical pumping experiments.

Journal of Physics B Atomic and Molecular PhysicsFeb 1, 197327 citations

Mixture of Longitudinal Resonance and Transverse Resonace

Noriaki Tsukada, Toru Ogawa

By means of a theoretical approach recently developed by Pegg and Series, the consequences of misalignment of an oscillating rf field in optical-rf double resonances are investigated. Effects of both the longitudinal pumping and the transverse pumping are considered. We show that the single (or ordinary) or multiple quantum resonances and the transverse resonance appear at integral multiples of the oscillating field frequency simultaneously. It is also shown that there is no essential difference between the parametric resonance and the Haroche resonance, namely the transverse resonance becomes the parametric resonance for misalignment angle θ=90° and becomes the Haroche resonance for θ=0°.By means of a theoretical approach recently developed by Pegg and Series, the consequences of misalignment of an oscillating rf field in optical-rf double resonances are investigated. Effects of both the longitudinal pumping and the transverse pumping are considered. We show that the single (or ordinary) or multiple quantum resonances and the transverse resonance appear at integral multiples of the oscillating field frequency simultaneously. It is also shown that there is no essential difference between the parametric resonance and the Haroche resonance, namely the transverse resonance becomes the parametric resonance for misalignment angle θ=90° and becomes the Haroche resonance for θ=0°.

Journal of the Physical Society of JapanMar 1, 19743 citations

Effects of an arbitrarily oriented rotating field in magnetic resonance

S. Nakayama, T. Yabuzaki, Toru Ogawa

Physics Letters AOct 1, 19744 citations

Magnetic resonance in an elliptic magnetic field

Е. А. Иванченко

arXiv:quant-ph/0404114Physica B Condensed MatterFeb 26, 20055 citations

Transverse magnetic field effects on diamond quantum sensor for EV battery monitor

Yuji Hatano, Junya Tanigawa, Akimichi Nakazono +7 more

Key implementation points for achieving full accuracy in simultaneous temperature and magnetic field measurement and linearity when applying diamond quantum sensors to electric vehicle (EV) battery monitors were investigated. Both the static and busbar current magnetic field are required to be aligned to the NV-axis. If misalignment should exist, the resonance frequency midpoint move in the direction opposite to the temperature change under a large busbar current due to the transverse magnetic field effect. Misalignment could be quantified with an accuracy of ±1° by analysing the resonance frequency midpoint change under a current of ±1,000 A. The transverse magnetic field effects compensation estimated from misalignment, confirmed that the resonance frequency midpoint changed consistently with temperature changes. Furthermore, linearity over a wide dynamic range also improved. Moreover, it will contribute to accurate alignment of the two sensors for differential detection to eliminate external noise as common mode. These are expected to expand the application of diamond sensors for high-precision measurement in a wide dynamic range.Key implementation points for achieving full accuracy in simultaneous temperature and magnetic field measurement and linearity when applying diamond quantum sensors to electric vehicle (EV) battery monitors were investigated. Both the static and busbar current magnetic field are required to be aligned to the NV-axis. If misalignment should exist, the resonance frequency midpoint move in the direction opposite to the temperature change under a large busbar current due to the transverse magnetic field effect. Misalignment could be quantified with an accuracy of ±1° by analysing the resonance frequency midpoint change under a current of ±1,000 A. The transverse magnetic field effects compensation estimated from misalignment, confirmed that the resonance frequency midpoint changed consistently with temperature changes. Furthermore, linearity over a wide dynamic range also improved. Moreover, it will contribute to accurate alignment of the two sensors for differential detection to eliminate external noise as common mode. These are expected to expand the application of diamond sensors for high-precision measurement in a wide dynamic range.

Frontiers in Quantum Science and TechnologySep 3, 20244 citations

Oscillating-field misalignment in magnetic resonance

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