[time-nuts] So what’s inside that Cs Beam Tube anyway?

William H. Fite omniryx at gmail.com
Wed Nov 2 12:04:41 EDT 2016


I may be missing something (as I often do) but why not just buy some
cesium? About ten bucks a gram for high-purity metal in glass ampoules.


On Wednesday, November 2, 2016, Peter Reilley <preilley_454 at comcast.net>
wrote:

> Just throwing this out: would it be possible recover the cesium by heating
> the tube but cooling it near where the reservior is?   This might cause the
> cesium to migrate in that direction and some of it end up in the reservior?
>
> Pete.
>
> On 11/2/2016 11:38 AM, paul swed wrote:
>
>> Oh yes and guess which tubes we find? The 40 year olds at ham prices. :-)
>> At least thats what I have.
>> Like your comment as so far what I have learned is that seems like other
>> things going on.
>> I sort of believe its C pollution of things like the ionizer and even the
>> photo tube elements over time. Its a curiosity without much of a way to
>> prove it.
>>
>> Regards
>> Paul
>> WB8TSL
>>
>> On Wed, Nov 2, 2016 at 10:53 AM, Richard (Rick) Karlquist <
>> richard at karlquist.com> wrote:
>>
>> This has probably been covered here before, but, at least going
>>> to the 5071A, now 25 years ago!, all CBT's, whether high
>>> performance or not, have the same amount of cesium inside.
>>> This means that the standard performance (never call it
>>> "low" performance) CBT has enough cesium to last 30 years!
>>> Thus for those tubes, we can rule out cesium replenishment
>>> even if it were possible.
>>>
>>> Rick
>>>
>>>
>>> On 11/1/2016 8:38 PM, Mark Sims wrote:
>>>
>>> You mean I can't just drill a hole in,  wash out the old cesium with some
>>>> tap water ;-),  toss in some new cesium, suck out the air,  bung a cork
>>>> in
>>>> the hole, and call it a day?   Drat! foiled again...
>>>>
>>>> ---------------
>>>>
>>>> Because it's not that easy. We are talking about a high vacuum system
>>>>
>>>>> here.
>>>>>
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