Proximity detector circuits: an alternative to tunnel diode oscillators for contactless measurements in pulsed magnetic field environments.
Proximity detector circuits: an alternative to tunnel diode oscillators for contactless measurements in pulsed magnetic field environments.
复制标题
接近检测器电路：隧道二极管振荡器的替代方案，用于脉冲磁场环境中的非接触式测量。
DOI：
10.1063/1.3152219
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
J. Brooks
中科院分区：
文献类型：
--
作者：
M. Altarawneh;C. Mielke;J. Brooks
本文描述了一种基于接近检测器集成电路的射频振荡器电路，作为传统隧道二极管振荡器在低温下脉冲磁场测量的替代方案。接近检测器电路设计虽然不如隧道二极管振荡器电路灵敏，但在脉冲磁场极端环境下的测量中具有许多基本优点。这些特点包括对电感线圈中感应电压的操作不敏感，消除二极管偏置电路和调谐，以及谐振频率变化的宽动态范围。该电路已成功用于测量Ba(0.55)K(0.45)Fe2As2单晶高达60 T的超导上临界场。
A radio frequency oscillator circuit based on a proximity detector integrated circuit is described as an alternative for the traditional tunnel diode oscillator used for pulsed magnetic field measurements at low temperatures. The proximity detector circuit design, although less sensitive than tunnel diode oscillator circuits, has a number of essential advantages for measurements in the extreme environments of pulsed magnetic fields. These include the insensitivity of operation to voltages induced in the inductor coil, the elimination of a diode bias circuit and tuning, and a broad dynamic range of resonant frequency variation. The circuit has been successfully applied to measure the superconducting upper critical field in Ba(0.55)K(0.45)Fe2As2 single crystals up to 60 T.