Abstract

A spinner magnetometer, for paleomagnetic research, consisting of a 5 cps spinner shaft, a fluxgate gradiometer pickup, and a phase sensitive voltmeter is described. A major consideration in the design of the system is that it may be duplicated with a minimum of available technical facilities. A discussion is given of possible improvements in sensitivity. The present sensitivity is 1 × 10 −7 emu/cm 3 for an 11.5 cm 3 specimen.

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