Re: Do free particles have spin?
From: Gregory L. Hansen (glhansen_at_steel.ucs.indiana.edu)
Date: 09/24/04
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Date: Fri, 24 Sep 2004 18:59:21 +0000 (UTC)
In article <w4mdnSYXV63XwsncRVn-pA@softcom.net>,
David Rutherford <drutherford@softcom.net> wrote:
>Is there any evidence for the existence of particle spin for free
>particles, that is, for particles not bound to atoms? If so, please give
>references or links.
Polarization of light?
Werner and friends showed that a neutron really is a spinor. They split a
neutron beam in an interferometer, and showed that the neutrons in one leg
must be rotated by 4*pi to return to their original state.
Polarizers and spin flippers are commonly used on neutron beam lines.
-- "You're not as dumb as you look. Or sound. Or our best testing indicates." -- Monty Burns to Homer Simpson
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