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µSR

Chapters:

  1. Introduction
  2. The muon
  3. Muon production
  4. Spin polarization
  5. Detect the µ spin
  6. Implantation
  7. Paramagnetic species
  8. A special case: a muon with few nuclei
  9. Magnetic materials
  10. Relaxation functions
  11. Superconductors
  12. Mulab
  13. Musite?
  14. More details

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MuSR

Index | A bit of history >


Introduction to µSR

µSR is a condensed matter experimental technique that measures internal magnetic fields inside matter by means of the spin precession of implanted polarized muons. The muon is an unstable elementary particle. It is produced above a certain threshold energy by protons impinging on solid targets. Muons can be selected with 100% spin polarization along the beam axis and stopped inside the material that one wishes to investigate.

The muon decays emitting a positron preferentially in the direction of its spin. Thus the muon spin precession is seen as an oscillations in the positron count rates in a fixed detector. The frequency of this oscillation measures the internal field, for instance that due to surrounding ordered magnetic moments in an antiferromagnet.

The wiki index is just below, but if you want a really simple account of µSR watch this http://www.youtube.com/watch?v=S4iSqS1rEX8 and if you want to catch a glimpse of the ISIS Muon Training Schools watch this http://www.youtube.com/watch?v=q5ydGCg4ZsM


  1. Introduction to µSR, with hystorical notes
    1. A bit of history
    2. The muon
    3. Muon production
    4. How to produce a net spin polarization
    5. How to detect spin polarization
    6. The muon fate at implantation
    7. Paramagnetic species
    8. A special case: a muon with few nuclei
    9. Magnetically ordered materials
    10. Relaxation functions
    11. Superconductors
    12. Mulab: a matlab toolbox shareware
  2. umpy, the long and winding road to a python musr analysis suite?
  3. Dipolar sums
  4. Muon site determination
  5. Varia
  6. Old Varia (next to wastebasket)
  7. W.I.P.
  8. Appendices

Index | A bit of history >

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Page last modified on July 21, 2014, at 04:07 PM