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Re: [Phys-L] neutrons

~ precesses ~
On Tuesday, February 9, 2021, 07:47:25 PM CST, Brian Whatcott <> wrote:

I am familiar with the em radiation effect consequent to applying a strong E-W magnetic field to a small water phial, and listening for the EM signal emitted for a second or two after the  magnetic field is removed and (in the classical description) the proton spin vector processes back to the geomagnetic field direction.On searching for neutron spin precession, I came across this URL which may possibly be helpful. It mentions a somewhat comparable signal.

    On Tuesday, February 9, 2021, 11:14:58 AM CST, David Ward <> wrote: 

Dear Phys-L Folks:

Pardon my not taking the time to research this in any detail... and you'll likely answer this efficiently.  I did discuss the question  briefly with a colleague and neither of us had a nice response for a student question. A student asked about neutrons.

I recognize that a neutron has a non-zero magnetic moment, that it is a collection of quarks with a total electric charge of zero. Here's the student question: If a neutron were made to move, would its electromagnetic nature result in EM wave propagation?

My first answer is no, but there is that magnetic moment and the substructure of the neutron. A cursory glance with Google led to one or two hits where people implied it might emit.

I thank you in advance for any response. Have a safe and healthy day!


Physics Prof.
Union University
Forum for Physics Educators
Forum for Physics Educators