[time-nuts] Mercury Ion Clock
magnus at rubidium.dyndns.org
Sat Nov 1 06:42:59 EDT 2014
The traditional Hg ion clock with it's 40,5 GHz frequency is doable, but
it would be interesting if it could be commercialized at a (time-nuts)
The modern optical clock got much easier to work with when the frequency
comb was invented. The frequency comb and stable lasers is now
commercialized, but not cheap, not cheap at all.
On 11/01/2014 02:27 AM, Bob Camp wrote:
> Trapped ion clocks have been the “obvious successor” to a Cs tube for at least 30 years. There is a *lot* of very fancy work involved in getting from 10 MHz up to a very specific light wavelength with low ADEV and good phase noise…..
> Rocket science indeed. Time Nuts rocket science, but tough to do none the less.
>> On Oct 31, 2014, at 8:09 PM, paul swed <paulswedb at gmail.com> wrote:
>> Humor aside. I did dig deeper. It seems that this technology could be
>> commercialized in larger volumes and might land in the same cost as a good
>> CS does today. Technically it looks reasonable.
>> On Fri, Oct 31, 2014 at 1:45 PM, paul swed <paulswedb at gmail.com> wrote:
>>> I am sorry to say thats the wrong clock picture.
>>> That picture is of 2 glass coffee tables and a toaster in between.
>>> I see you can order that art om ebay. Item number 142657nottoday3245
>>> On Fri, Oct 31, 2014 at 1:36 PM, Jim Lux <jimlux at earthlink.net> wrote:
>>>> OK, I know you all want to go get one...
>>>> It's Bob Tjoelker in front of the Deep Space Atomic Clock (DSAC) being
>>>> tested for magnetic field sensitivity. It's a trapped ion clock, 1 liter/1
>>>> kg, orders and orders of magnitude better than a USO in performance.
>>>> (if it's in the building I think it's in, the rebar is made of
>>>> non-magnetic stainless steel)
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