[time-nuts] Proton Precession Magnetometer

[brent evers]

Whats the required sensitivity? How much field strength (penetration)
are you trying to measure?

Brent

On Tue, Apr 5, 2011 at 9:26 PM, Neville Michie <namichie at gmail.com> wrote:
> Hi,
> I am boxing up my LPRO rubidium source in a steel box. The device is to be
> thermostated
> by controlling a small fan outside the box to keep the LPRO at about 40*C.
> Although the unit is in a mumetal box I assume there may be some penetration
> of earths magnetic field.
> The steel box should help that.
> To test this I want to build a very stable magnetometer. Now I know that all
> you need is a jar of water or kerosene
> to give you protons, and a coil around the jar to kick the protons and then
> listen to them sing.
> I have also been told that these instruments do not work in a laboratory, as
> the AC magnetic field
> drives them crazy.
> I am thinking of lock in amplifiers and phase locked loops.
> Also toroidal coil or paired coils.
> Can anyone in this group point me to an easy to construct and fiercely
> accurate design to build?
>
> cheers, Neville Michie
>
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