Time-differential perturbed angular correlation spectrometer

这里要求的设备是建立一个时间微分扰动角相关（TDPAC）光谱仪。该仪器的时间分辨率优于1 ns通过了解材料中的单个原子如何相互作用以产生用于大块材料的大尺度磁性，（电机中的永磁体，磁盘驱动器中的记录介质）我们的目标是开发具有更高性能的新材料。磁性材料是许多技术的核心，the most最obviously明显being存在the recording记录industry行业.对磁学基本问题的研究已经在电机用硬磁体、计算机硬盘用薄膜磁体和磁盘驱动器中读/写磁头用非常软的磁体方面取得了无数的进展。将使用该设备进行的项目要求他处理磁有序的基本问题：将调查有序的性质和有序的时间变化。

The equipment requested here is to build a Time-Differential PerturbedAngular Correlation (TDPAC) spectrometer. This instrument will have atime resolution of better than 1ns (1/1,000,000,000 seconds) and willbe used to study magnetic materials at the atomic scale.By understanding how the individual atoms in a material interact toyield the large-scale magnetic properties that are exploited in bulkmaterials (permanent magnets in motors, recording media in disc drives)we aim to develop new materials with improved performance.Magnetic materials are central to many technologies, the most obviousbeing the recording industry. Research into fundamental issues in magnetismhas led to countless advances in hard magnets for motors, thin-film magnetsfor computer hard discs and very soft magnets for read/write heads indisc drives.The projects that will be undertaken with the equipment requested hereaddress fundamental issues of magnetic ordering: both the nature of theorder and the time variations of that ordering will be investigated.