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Longitudinally detected ESR magnetometer for wide-range measurements of low fields
1Institute for Life Support Technology, Yamagata Public Corporation for Development of Industry, 2-2-1 Matsuei, Yamagata 990-2473, Japan. yokohide@fmu.ac.jp
Abstract:
A new magnetometer utilizing a longitudinally detected ESR (LODESR) method was developed. The probe head of the LODESR magnetometer is equipped with a single-turn coil (8 mm in diameter) which has a very wide bandwidth because the reactance of the coil is always smaller than the resistance of the transmission line (50 ohm) at frequencies less than 700 MHz. Thus, an absolute magnetic field could be measured over a wide range (2 to 9 mT) using this magnetometer without changing the probe head.