A 4He vector zero-field optically pumped magnetometer operated in the Earth-field.
Rev Sci Instrum
; 92(10): 105005, 2021 Oct 01.
Article
en En
| MEDLINE
| ID: mdl-34717435
ABSTRACT
Low intrinsic noise, high bandwidth, and high accuracy vector magnetometers are key components for many ground or space geophysical applications. Here, we report the design and the test of a 4He vector optically pumped magnetometer specifically dedicated to these needs. It is based on a parametric resonance magnetometer architecture operated in the Earth magnetic field with closed-loop compensation of the three components of the magnetic field. It provides offset-free vector measurements in a ±70 µT range with a DC to 1 kHz bandwidth. We demonstrate a vector sensitivity up to 130 fT/âHz, which is about ten times better than the best available fluxgate magnetometers currently available for the same targeted applications.
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Banco de datos:
MEDLINE
Idioma:
En
Revista:
Rev Sci Instrum
Año:
2021
Tipo del documento:
Article
País de afiliación:
Francia