Re: Neutron mass

["Paul Camp" <pjcamp@coastal.edu>]

> 	A bare neutron (i.e. one outside a nucleus) will decay into a
> proton plus an electron plus neutrino.  Knowing the rest masses of the
> proton and electron, and measuring the endpoint of the beta spectrum you
> can determine the mass of the neutron.

> Dr. Mark H. Shapiro

It has been a long time since nuclear but I seem to recall being able 
to do this with a neutron interferometer as well. Tilt it at an angle 
and the interference pattern experiences a gravitationally induced 
phase shift which depends on the square of the mass.

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