Richard B. Gilbert wrote:
[EMAIL PROTECTED] wrote:
Ulrich Windl <[EMAIL PROTECTED]> wrote:
"Max Power" <[EMAIL PROTECTED]> writes:
Use of "Atomic Clock" Nomenclature
<snip>
It seems that Cs clocks are now forbidden to fly
because cs133 is highly flamable (or even does it
burn spontaneously ?) in the ambiant air.
Cesium belongs to the same chemical family as Sodium and Potassium. It
will burn spontaneously when exposed to air and/or water! I would be
surprised, however, if the amount of cesium in a cesium beam tube were
sufficient to be serious problem. And if I were shipping a cesium beam
tube or an entire cesium clock by air, I would take extreme care in
packing it. I'm told that the cheapest cesium clocks cost about $40,000
US.
I have shipped caesium oscillators by air, there is a declaration form that gives aproval by the US department of transport to ship them as cargo on
domestic aircraft.
This also worked in Australia and south east asia.
The plane would have to crash before the tube would rupture, and then the small
amount of ceasium would be the last of your worries.
It's interesting that they don't have the same concern about rubidium
oscillators , I ship a lot more of them around the world.
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