[time-nuts] vs Hg ion? Re: GPS clock stabilitiy, Rb vs Cs

[Magnus Danielson]

On 05/05/2013 11:14 PM, Jim Lux wrote:
> On 5/5/13 11:45 AM, Magnus Danielson wrote:
>> Hi Jim,
>>
>> On 05/05/2013 07:33 PM, Jim Lux wrote:
>>> On 5/5/13 10:05 AM, Magnus Danielson wrote:
>>>> They have been targeting this goal for a very long time. Several
>>>> interesting papers is to be found at PTTI, NIST etc.
>>>>
>>>
>>> Yeah.. some years (6 or 7?) ago, John Prestage had a prototype of the
>>> physics package working on the bench. Getting from there to a repeatably
>>> manufacturable space flight qualified has been a few years. Not to
>>> mention making flight qualified electronics to go around it. I think the
>>> first flight will be next year or the year after as a hosted payload on
>>> something.
>>
>> Here is a starting-point:
>
>> JPL:
>> http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/40206/3/04-2783FN.pdf
>>
>
> the last reference in that paper is from L.S. Cutler, et al. Is that the
> same Cutler at HP?

Indeed it is. Guess who worked on the HP mercury ion clock?

Cheers,
Magnus