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Pré-Publication, Document De Travail Année : 2023

Magnetisation Moment of a Bounded 3D Sample: Asymptotic Recovery from Planar Measurements on a Large Disk Using Fourier Analysis

Résumé

We consider the problem of reconstruction of the overall magnetisation vector (net moment) of a sample from partial data of the magnetic field. Namely, motivated by a concrete experimental setup , we deal with a situation when the magnetic field is measured on a portion of the plane in vicinity of the sample and only one (normal to the plane) component of the field is available. We assume the measurement area to be a sufficiently large disk (lying in a horizontal plane above the sample) and we obtain a set of estimates for the components of the net moment vector with the accuracy asymptotically improving with the increase of the radius of the measurement disk. Compared to our previous preliminary results, the asymptotic estimates are now rigorously justified and higher-order estimates are given. The presented approach also elucidates the derivation of asymptotic estimates of an arbitrary order. The obtained results are illustrated numerically and their robustness with respect to noise is discussed.
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Dates et versions

hal-03813559 , version 1 (13-10-2022)
hal-03813559 , version 2 (27-12-2022)
hal-03813559 , version 3 (09-01-2024)

Identifiants

  • HAL Id : hal-03813559 , version 2

Citer

Dmitry Ponomarev. Magnetisation Moment of a Bounded 3D Sample: Asymptotic Recovery from Planar Measurements on a Large Disk Using Fourier Analysis. 2023. ⟨hal-03813559v2⟩
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