The new high field photoexcitation muon spectrometer at the ISIS pulsed neutron and muon source

Abstract

A high power pulsed laser system has been installed on the high magnetic field muon spectrometer (HiFi) at the ISIS 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.

arXiv comment12 pages, 7 figures, and 2 tables

References in corpus (4)

• Imaging spin flows in semiconductors subject to electric, magnetic, and strain fields
• Optimising a Muon Spectrometer for Measurements at the ISIS Pulsed Muon Source
• The importance of intra-molecular electron spin relaxation in small molecular semiconductors
• Photo-induced persistent inversion of germanium in a 200-nm-deep surface region

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