[time-nuts] homebrew maser

Bruce Griffiths bruce.griffiths at xtra.co.nz
Tue Aug 31 20:23:30 UTC 2010

PTFE wall storage bulb wall coatings haven't been used for some decades, 
FEP (or the Russian fluoropolymer ) is better in that a smoother coat is 
achievable see:

A sual hexapole state selector is probably a little more effective than 
the cruder method used in the Russian masers.


Mark Sims wrote:
> Same general idea,  but an image intensifier plate would probably not work well.  They are usually thinner and are cut at a bias so the electrons ricochet along its length.  You might be able to mount one so that it cancels the bias angle.
> They are made by stretching a bundle of hollow glass tubes that have been filled with solid glass rods of a different composition.  The original bundle can be very large (like over a meter) and is shrunk down to like 100 fibers per millimeter.  It is then sliced and polished.  Often the slices (or the pulled bundles) are joined into a bigger plate.   Then the inner solid glass is dissolved out with a strong alkali. The hollow tubes are coated with a photoelectric material.
> The image from the tube is inverted using a "twister"...  a coherent fiber optic rod that has a 180 degree twist.
> ---------------
> Do you know if the collimator is made from an uncoated microchannel plate?
> If so, an old, broken Gen II image intensifier might be a viable source.
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

More information about the time-nuts mailing list