Abstract
We discuss the general principles of laser-excited muon pump–probe spin spectroscopy (photo-μSR), including the historical origins of the technique, and discuss the overall experimental method. We review examples of past work using this technique, then discuss the future upgrade of the HiFi spectrometer with a high-power laser system. In particular, we note that performing photo-μSR experiments at high field around avoided level crossing resonances in unsaturated organic materials, offers advantages over the work previously performed at lower magnetic fields. We then present some results from some preliminary modelling of a rather simple two-electron spin system, where we see quite a complicated behaviour of the avoided level crossings. Finally, we discuss some potential applications in the biosciences, such as electron transfer in peptides and photochemistry of carotenoids, as well as magnetism which is a more traditional area for study with muons.
Published Version
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