ISIS

The ISIS neutron and muon source at the Rutherford Appleton Laboratory on the STFC Harwell campus near Oxford in Oxfordshire, UK produces pulsed muons from a synchrotron-driven proton beam on a target just upstream of the spallation neutron source. The advantages of pulsed muons are (1) that there is in principle no limit on how many muons can be stopped simultaneously in a sample; and (2) that irradiation with (e.g.) RF power for muon spin resonance experiments is vastly more efficient when applied to many muons at once. The primary disadvantages are (1) poor time resolution due to finite pulse width defining "<math>t=0</math>"; (2) the need to break up detectors into many small segments to avoid "pile-up" distortions.

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