What interest to use caesium magnetometer instead of fluxgate gradiometer?

Mathé, Vivien; Lévèque, François; Druez, Marion

doi:10.4000/archeosciences.1781

Cited by 7 publications

(5 citation statements)

References 3 publications

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“…The magnetic survey was undertaken by means of a G-816 geometric scalar magnetometer ( Figure 3) [16,17]. The data were measured in gamma (›) unit, where 1 › = 1 nT (nanotesla).…”

Section: Methodsmentioning

confidence: 99%

Analysis of the Magnetic Anomalies of Buried Archaeological Ovens of Aïn Kerouach (Morocco)

Ayad

Bakkali

2018

International Journal of Geophysics

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Aïn Kerouach is one of the most important archaeological sites in the northern part of Morocco. The main buried archaeological ruins in this area were surveyed in 1977 using magnetic prospecting. This survey highlights the mean anomalies that are related to potteries ovens built to the Marinid dynasty that governed Morocco from the 13th to the 15th century. In order to find the maximum depth of the sources, we computed the enhanced downward continuation filter in order to highlight the magnetization contrasts in high detail, depending on the depth downward included in the computation. The main goal is providing a reliable mapping to observe the ovens in depth by shifting the data below the plane of measurement. The results showed an important depth variation of the main ovens given by the original magnetic map and revealed others. Indeed, the downward continuation process applied to analyze the magnetic data shows its efficiency to highlight the buried archaeological structures.

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“…The magnetic survey was undertaken by means of a G-816 geometric scalar magnetometer ( Figure 3) [16,17]. The data were measured in gamma (›) unit, where 1 › = 1 nT (nanotesla).…”

Section: Methodsmentioning

confidence: 99%

Analysis of the Magnetic Anomalies of Buried Archaeological Ovens of Aïn Kerouach (Morocco)

Ayad

Bakkali

2018

International Journal of Geophysics

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“…As a result, magnetometers based on gaseous species are of interest not only in physics, but also in other fields. For example, in archaeology and geophysics a set of caesium magnetometers has shown better characteristics in speed, quality, and spatial resolution than the fluxgate magnetometers [1]. In biology, caesium magnetometers have proved themselves to be as good as or even better than superconducting quantum interference devices (SQUIDs) in terms of sensitivity when measuring magnetic field changes in plants [2].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Field Gradiometer with Sub-Micron Spatial Resolution Based on Caesium Vapour in an Extremely Thin Cell

Auzinsh

Bērziņš

Ferber

et al. 2015

Latvian Journal of Physics and Technical Sciences

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In this paper we present a device for measuring the magnetic field and its gradient with a spatial resolution of several hundred nanometres. This device is based on caesium metal vapour confined to an extremely thin cell (ETC). To measure magnetic signals, we use absorption and very low laser powers, which might be appealing for modern fabrication techniques. A portable, fully automated device was constructed.

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“…Optical magnetometers are developed for a variety of applications [13] including fundamental research [14][15][16], characterization of magnetic anomalies and of their dynamics in space-physics [17,18], geology [19], archaeology [20,21], material science e.g. to detect diluted magnetic nano-and micro-particles [22] or induced eddy currents [23][24][25][26] (with potential in medical applications, in detection of biomagnetism [27] or in building apparatuses for nuclear magnetic resonance (for spectroscopy or imaging) in the ultra-low-field [28][29][30][31] and zero-to-ultra-low field regimes [32,33].…”

Section: Introductionmentioning

confidence: 99%

Spin dynamic response to a time dependent field

et al. 2021

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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 analysis puts in evidence different regimes: beside a tailorable low-pass-filter behaviour, a band-pass response with interesting potential applications emerges. Extending the analysis to the second perturbation order permits to study the response to generically oriented fields and to characterize several non-linear features in the behaviour of such kind of systems.

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What interest to use caesium magnetometer instead of fluxgate gradiometer?

Cited by 7 publications

References 3 publications

Analysis of the Magnetic Anomalies of Buried Archaeological Ovens of Aïn Kerouach (Morocco)

Analysis of the Magnetic Anomalies of Buried Archaeological Ovens of Aïn Kerouach (Morocco)

Magnetic Field Gradiometer with Sub-Micron Spatial Resolution Based on Caesium Vapour in an Extremely Thin Cell

Spin dynamic response to a time dependent field

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