Islam Zahirul, Ruff Jacob P C, Nojiri Hiroyuki, Matsuda Yasuhiro H, Ross Kathryn A, Gaulin Bruce D, Qu Zhe, Lang Jonathan C
X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Illinois 60439, USA.
Rev Sci Instrum. 2009 Nov;80(11):113902. doi: 10.1063/1.3251273.
We present a portable pulsed-magnet system for x-ray studies of materials in high magnetic fields (up to 30 T). The apparatus consists of a split-pair of minicoils cooled on a closed-cycle cryostat, which is used for x-ray diffraction studies with applied field normal to the scattering plane. A second independent closed-cycle cryostat is used for cooling the sample to near liquid helium temperatures. Pulsed magnetic fields (approximately 1 ms in total duration) are generated by discharging a configurable capacitor bank into the magnet coils. Time-resolved scattering data are collected using a combination of a fast single-photon counting detector, a multichannel scaler, and a high-resolution digital storage oscilloscope. The capabilities of this instrument are used to study a geometrically frustrated system revealing strong magnetostrictive effects in the spin-liquid state.
我们展示了一种用于在高磁场（高达30 T）下对材料进行X射线研究的便携式脉冲磁体系统。该装置由一对在闭环低温恒温器上冷却的小型分裂线圈组成，用于在施加磁场垂直于散射平面的情况下进行X射线衍射研究。第二个独立的闭环低温恒温器用于将样品冷却至接近液氦温度。通过将可配置的电容器组放电到磁体线圈中来产生脉冲磁场（总持续时间约为1 ms）。使用快速单光子计数探测器、多通道定标器和高分辨率数字存储示波器的组合来收集时间分辨散射数据。该仪器的功能用于研究一个几何受挫系统，该系统在自旋液体状态下表现出强烈的磁致伸缩效应。
