Reflection high-energy positron diffraction: the past 15 years and the future
Reflection high-energy positron diffraction: the past 15 years and the future
复制标题
反射高能正电子衍射：过去15年与未来
DOI：
10.1088/1742-6596/443/1/012068
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
and A. Kawasuso
中科院分区：
文献类型：
--
作者：
Y. Fukaya;M. Maekawa;Mochizuki;K. Wada;T. Hyodo;and A. Kawasuso
反射式高能正电子衍射(RHEPD)是反射式高能电子衍射(RHEED)的正电子对应物。由于正电子的正电荷，RHEPD为确定第一表面层的结构提供了一个强有力的工具。我们一直在用正电子束(通量：103~104e+/s)和22个Na源研究重要的表面系统的独特的电磁性质和相变现象。目前，我们正在基于KEK慢正电子设备上的直线加速器开发一种新的RHEPD装置，该装置具有明亮而强烈的正电子束(通量：105e+/秒)。在这里，我们总结了表面科学中RHEPD研究的过去结果和未来的展望。
Reflection high-energy positron diffraction (RHEPD) is the positron counterpart of reflection high-energy electron diffraction (RHEED). Owing to the positive charge of the positron, RHEPD provides a powerful tool with which to determine the structure of the first surface layer. We have been investigating important surface systems concerning their unique electric and magnetic properties and also phase transition phenomena using positron beams (flux: 10 3~ 10 4 e+/sec) with 22 Na sources. Currently, we are developing a new RHEPD apparatus with a bright and intense positron beam (flux: 10 5 e+/sec) based on the LINAC at the Slow Positron Facility, KEK. Here, we summarize the past results and the future prospects of the RHEPD study in the surface science.