Magnetic Monopoles?

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Diogenes
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Magnetic Monopoles?

Post by Diogenes »

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Magnetic monopoles are created (top) when the spin of an ion in one corner of a spin ice crystal is knocked askew, creating a monopole (red sphere) and adjacent antimonopole (blue sphere). Neutron scattering at the NCNR allowed the team to see the spin ice's transition from its normal state (center) to the monopole state. Monopoles scatter neutrons in a telltale fashion indicated by the red arrows in (bottom.) Credit: NIST

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http://www.physorg.com/news174073793.html

Diogenes
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Post by Diogenes »

Dumb question. Why would a monopole scatter neutrons?
Neutrons are neutral aren't they ?

Art Carlson
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Post by Art Carlson »

Diogenes wrote:Dumb question. Why would a monopole scatter neutrons?
Neutrons are neutral aren't they ?
They have a magnetic dipole moment nevertheless. It one of the indications that they are not altogether fundamental particles.

kunkmiester
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Post by kunkmiester »

Isn't the neutron scattering just a method of measuring things? I thought it was much like electron microscopes, you throw a neutron at the stuff, and watch how it bounces. Except that the properties of the neutron tell you different things than an electron or other particle or ray would.
Evil is evil, no matter how small

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