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Fig. 10 | Earth, Planets and Space

Fig. 10

From: Scanning SQUID microscope system for geological samples: system integration and initial evaluation

Fig. 10

Detection limit expected for a magnetic dipole. Magnetic fields produced just above a vertical magnetic dipole with magnetic moments of 1 × 10−14 Am2 (blue), 1 × 10−15 Am2 (yellow), and 1 × 10−16 Am2 (purple) are plotted versus distance. Red dashed vertical lines are the current sensor-to-sample distance (200 µm) and the target distance (100 µm), respectively. Minimum estimates of the noise level of the SQUID microscope system and the SQUID sensor are indicated by black horizontal dashed lines

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