[time-nuts] Rubidium Cells for Sale ?!

[Bruce Griffiths]

As expected the seller doesn't know, but offered 2 cells for the price of one if further info on the cells he's offering can be provided.
Determining the cell filling would likely be somewhat interesting/challenging.
Absorption spectroscopy using a tunable ECDL comes to mind to sort out the Rubidium isotopes present.

Bruce
> On 07 May 2019 at 08:42 Bob kb8tq <kb8tq at n1k.org> wrote:
> 
> 
> Hi
> 
> Ummm ….. errrr ….. the Efratom Rb’s use an integrated lamp plus one cell. 
> 
> http://www.wriley.com/A%20Modern%20MIL%20Rubidium%20Frequency%20Standard.pdf <http://www.wriley.com/A%20Modern%20MIL%20Rubidium%20Frequency%20Standard.pdf>
> 
> There still are a lot of people doing the lamp plus two approach. One of many:
> 
> http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf <http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf>
> 
> Bob
> 
> > On May 6, 2019, at 3:23 PM, Ed Palmer <ed_palmer at sasktel.net> wrote:
> > 
> > 
> > 
> > On 2019-05-06 10:00 AM,  Bob kb8tq <kb8tq at n1k.org>wrote:
> >> Hi
> >> 
> >> I?m sure they are good cells. The gotcha is ?which one is it??. A normal Rb has multiple
> >> cells doing different things. You ? umm? errr ? need a set of cells ?.
> > 
> > Why do you think I posed the question "Anybody feeling lucky (or desperate!)?"?  Don't forget that all(?) newer Rb standards use an integrated cell so it's a 'set' of one.  Whether that's the case here is unknown, but not likely given the size of this cell.
> > 
> > The only Russian Rb company I've heard of is Kvarz.  Has anyone seen a cell from one of their old units?
> > 
> > Ed
> > 
> > 
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