A spinner magnetometer for large Apollo lunar samples - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Review of Scientific Instruments Année : 2017

A spinner magnetometer for large Apollo lunar samples

Résumé

We developed a spinner magnetometer to measure the natural remanent magnetization of large Apollo lunar rocks in the storage vault of the Lunar Sample Laboratory Facility (LSLF) of NASA. The magnetometer mainly consists of a commercially available three-axial fluxgate sensor and a hand-rotating sample table with an optical encoder recording the rotation angles. The distance between the sample and the sensor is adjustable according to the sample size and magnetization intensity. The sensor and the sample are placed in a two-layer mu-metal shield to measure the sample natural remanent magnetization. The magnetic signals are acquired together with the rotation angle to obtain stacking of the measured signals over multiple revolutions. The developed magnetometer has a sensitivity of 5 × 10−7 Am2 at the standard sensor-to-sample distance of 15 cm. This sensitivity is sufficient to measure the natural remanent magnetization of almost all the lunar basalt and breccia samples with mass above 10 g in the LSLF vault.
Fichier principal
Vignette du fichier
766527_3_merged_1507499434.pdf (3.13 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01625779 , version 1 (01-02-2019)

Identifiants

Citer

Minoru Uehara, J. Gattacceca, Y. Quesnel, C. Lepaulard, E. A. Lima, et al.. A spinner magnetometer for large Apollo lunar samples. Review of Scientific Instruments, 2017, 88 (10), pp.104502. ⟨10.1063/1.5008905⟩. ⟨hal-01625779⟩
218 Consultations
164 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More