Precise standard system for low dc magnetic field reproduction
| Autor: | Young Gyun Kim, V. N. Khorev, Po Gyu Park, V. Ya. Shifrin |
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| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Review of Scientific Instruments. 73:3107-3111 |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.1483900 |
| Popis: | A standard system for low magnetic fields has been developed at the Korea Research Institute of Standards and Science. The system consists of a precision solenoid, He–Cs atomic magnetic resonance magnetometer, and apparatus for three-axis compensation of the Earth’s magnetic field. The variations of the Earth’s magnetic field are automatically compensated within 0.1 nT/h by a Cs atomic magnetic resonance field controller. The solenoid reproduces a dc field that is uniform at better than 3×10−7 within ±2 cm around the center. The experimentally measured coil constant and temperature coefficient of the solenoid are 1.231 0596×10−3 T/A (25 °C) and 3.8×10−7/°C, respectively. The standard serves for the calibration of magnetometers and uniform field coils, and also supports experiments related to research in magnetic fields in the range of (0.02–1.2) mT with (2–10)×10−6 uncertainty. |
| Databáze: | OpenAIRE |
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