[time-nuts] CS reservoir depletion

Robert Darlington rdarlington at gmail.com
Thu Jan 13 23:23:05 UTC 2011

Lead is slightly radioactive.   Presumably the person building the device
would either source the right isotope or just use an existing vapor
container from an old unit.  Of course if it was totally scratch built, I'd
still just buy the right isotope.


On Thu, Jan 13, 2011 at 4:18 PM, Rick Karlquist <richard at karlquist.com>wrote:

> J. Forster wrote:
> >> I'd imagine building a Cs unit might be a bit easier than an H MASER,
> but
> > not by much. Certainly a Rb is easier.
> >
> > -John
> Other than the "glassware", building an Rb is entirely possible
> in your garage, at least if you are a certifiable time nut.
> This is based on the HP 10816 mini-Rb I worked on circa 1980.
> It would be even easier now.
> The glassware is tricky only because you have to work with
> stuff that is more like fused quartz than glass.  This is because
> regular glass can't deal with Rb very well.
> The other problem for the garage builder is that one of the Rb
> isotopes is slightly radioactive.  Probably not OK to have
> in your garage.
> Rick Karlquist N6RK
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