[time-nuts] Rubidium standard

[Alan Melia]

They probably dont want the little rascals bumping into one-another and
broadening
the resonance line :-))
Alan G3NYK
----- Original Message -----
From: "Mike S" <mikes at flatsurface.com>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Monday, November 23, 2009 9:10 PM
Subject: Re: [time-nuts] Rubidium standard


> At 03:24 PM 11/23/2009, Poul-Henning Kamp wrote...
>
> >There are no "rubidium crystals" involved.
>
> Next you'll try and tell us that you can't make a clock run backwards
> by using dilithium crystals, and making it warp time.
>
> My understanding is that the Rb gets absorbed into the glass envelope,
> so that eventually there isn't enough to provide proper operation. Rb
> isn't that expensive (you can buy 1 g for $100 at retail -
> http://elementsales.com/pl_element_grp1.htm ), so I'm not clear on why
> they don't just put more than ~0.001 g in to begin with.
>
> www.spectratime.com/product_downloads/life_mtbf.pdf
>
>
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