| Zugriffsnummer |
12017 |
| Dokumenttyp |
Konferenzartikel in Zeitschrift
|
| Sprache |
Englisch
|
| Titel |
Magnetometer calibration setup controlled by nuclear magnetic resonance |
| Autor(in); Institution |
Weyand, Kurt; 2.24, Signalspeichertechnik und schwache magnetische Felder, PTB-Braunschweig
|
| Quelle/Jahr |
IEEE Transactions on Instrumentation and Measurement: 48
(1999), 2, 668
- 671
|
| ISSN |
0018-9456
|
| Verlag |
New York, NY: IEEE
|
| Konferenzangaben |
Conference on Precision Electromagnetic Measurements, CPEM, Washington, DC, 06-10, July, 1998, USA
|
| Freie Schlagworte |
Magnetic field coil ; magnetic field standard ; Nuclear Magnetic Resonance-magnetometer |
| Zusammenfassung |
For the calibration of magnetometer sensors in the field range from 1 mT to 200 mT, a measuring set-up has been developed consisting of a water-cooled multilayer solenoid and an NMR-magneto-meter of the marginal oscillator type. With a coil constant of about 20 mT/A, the field coil provides a field profile with two flat regions, where the field maxima are equal within 10-5 and with a distance of more than 40 mm so that the magnetometer readings can be compared simultaneously. The NMR-magnetometer operates with water samples having an absorption linewidth of 2 μT by adding paramagnetic CuSO4-ions. The volume of the samples amounts to 0.8 cm3 to 1.5 cm3 for fields below 20 mT and to 0.08 cm3 to 0.5 cm3 for higher fields. The uncertainty of detecting the center of the absorption line amounts to less than 0.1 μT. |
