ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Does the muon spin reach thermal equilibrium?
Abstract: The usual assumption is that the muon's polarisation decays to zero in a relaxation measurement since the initial polarisation of 100% is much greater than the typical Boltzmann population. In high fields and low temperatures this is no longer a good approximation: the Brillouin function for B=5T and T=30mK gives P=49% assuming the muon reaches equilibrium with the spins in the sample which are causing the relaxation, and that these spins are also in thermal equilibrium. Reversing the field will change the sign of the effect and thus change the apparent amplitude of the relaxing signal.
Experimenter: Dr John Wilkinson
Local Contact: Dr James Lord
Experimenter: Dr Peter Baker
DOI: 10.5286/ISIS.E.RB2220782
ISIS Experiment Number: RB2220782
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2220782-1 | HIFI | 25 February 2027 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
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Data Citation
The recommended format for citing this dataset in a research
publication is as:
[author], [date], [title], [publisher],
[doi]
For Example:
Dr John Wilkinson et al; (2024): Does the muon spin reach thermal equilibrium?, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2220782
Data is released under the CC-BY-4.0 license.
