Yokoyama K, Lord J S, Murahari P, Wang K, Dunstan D J, Waller S P, McPhail D J, Hillier A D, Henson J, Harper M R, Heathcote P, Drew A J
School of Physics and Astronomy, Queen Mary University of London, Mile End, London E1 4NS, United Kingdom.
ISIS, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom.
Rev Sci Instrum. 2016 Dec;87(12):125111. doi: 10.1063/1.4972827.
A high power pulsed laser system has been installed on the high magnetic field muon spectrometer (HiFi) at the International Science Information Service pulsed neutron and muon source, situated at the STFC Rutherford Appleton Laboratory in the UK. The upgrade enables one to perform light-pump muon-probe experiments under a high magnetic field, which opens new applications of muon spin spectroscopy. In this report we give an overview of the principle of the HiFi laser system and describe the newly developed techniques and devices that enable precisely controlled photoexcitation of samples in the muon instrument. A demonstration experiment illustrates the potential of this unique combination of the photoexcited system and avoided level crossing technique.
一个高功率脉冲激光系统已安装在位于英国STFC卢瑟福·阿普尔顿实验室的国际科学信息服务脉冲中子和μ子源的高磁场μ子谱仪（HiFi）上。此次升级使人们能够在高磁场下进行光泵浦μ子探针实验，这开启了μ子自旋光谱学的新应用。在本报告中，我们概述了HiFi激光系统的原理，并描述了新开发的技术和设备，这些技术和设备能够在μ子仪器中对样品进行精确控制的光激发。一个演示实验展示了这种光激发系统与避免能级交叉技术独特组合的潜力。
