磁场高达16 T的脉冲SACLA中的Single Shot X射线衍射
Single shot x-ray diffractometry in SACLA with pulsed magnetic fields up to 16 T
摘要：
利用X射线自由电子激光器（XFEL），在16 T的脉冲强磁场作用下，对样品进行了Single Shot X射线衍射（XRD）实验。钙钛矿锰氧化物中的反铁磁绝缘体相Pr $_{0.6}$ Ca $_{0.4}$ MnO $_{3}$在磁场$\approx 8$ T下塌陷，并出现铁磁金属相，这通过一系列Single Shot XRD中伴随的晶格变化来观察。讨论了在100 T以上的强磁场条件下进行Single Shot XRD实验的可行性。
英文摘要：
Single shot x-ray diffraction (XRD) experiments have been performed with a x-ray free electron laser (XFEL) under pulsed high magnetic fields up to 16 T generated with a nondestructive minicoil. The antiferromagnetic insulator phase in a perovskite manganaite, Pr$_{0.6}$Ca$_{0.4}$MnO$_{3}$, is collapsed at a magnetic field of $\approx 8$ T with an emergence of the ferromagnetic metallic phase, which is observed via the accompanying lattice changes in a series of the single shot XRD. The feasibility of the single shot XRD experiment under ultrahigh magnetic fields beyond 100 T is discussed, which is generated with a portable destructive pulse magnet.
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