Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Muon Spectroscopy

  1. Mar 8, 2005 #1
    I've been doing some research on Muon spectroscopy, and am not that far in the physics world yet. I've got kind of a fuzzy picture of what goes on, but could use some help in identifying some key concepts. The information I have been getting is from the following paper


    Muon-Spin Rotation Studies of Electronic Properties of Molecular Conductors and Superconductors

    Stephen J. Blundell

    Department of Physics, Oxford University, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom

    Received March 16, 2004




    which I recieved from the American Chemical Society Data Base


    What I have found thus far is that 100% polarized muons can be fired at a sample under study, and that the magnetic environment at the time of muon decay can have an effect on the emittance of positrons. Of prime importance to the theory of this form of study is the

    Now my understanding is that since the muon has negative helicity, the spin axis points antiparallel to the direction of motion. Why does precession occur? Can anyone help clairify this or suggest a good resource?



    Thanks
     
    Last edited by a moderator: Mar 8, 2005
  2. jcsd
  3. Mar 8, 2005 #2

    ZapperZ

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor

    The precession occurs because the muon spin is not along the direction of the external magnetic field that the muon is in. This is why, if the muon decays too quickly to "sample" the surrounding field, it will not have time to precess.

    However, in most cases, the muon lifetime is long enough (some people think it is too long and that's why neutron scattering is used in the study of many other materials) that the muon spectrum in a typical muSR spectroscopy will provide more of an "average" information of the magnetic orientation of the material being studied.

    Zz.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Muon Spectroscopy
  1. Muon lifetimes (Replies: 4)

  2. Muons and tauons (Replies: 7)

  3. Muon decay (Replies: 15)

  4. Muon and Scintillator (Replies: 1)

  5. Muon Production (Replies: 6)

Loading...