I don’t think the Cesium cell should light up at all on its own - it’s just a neutral gas of Cesium vapor when at temperature. Shouldn’t it be illuminated by a pump/probe light at the other end of the cell at the wavelength of the D1 line (near infrared)?
Oh I see, looking at the episode 1, they do use the ionized cesium lamp to generate the D1 line light than then pumps the second neutral cesium cell that you show here.
That's correct, this is a typical optical pumping magnetometer. I expected to find a transformation of the small Cs balls inside the cell into vapor when heated but maybe it is not so blatant.
I don’t remember, something like 150ºC. As said Marc I think only a small quantity of solid Cs transformed to vapor is enough. Unfortunately I didn’t succeed to get the auto-oscillation. I hope I will get more success with the ASQ-81.
Magic in a bottle for sure. I had a proton precession magnetometer and it was super simple technology. A two opposing coils in a paraffin filled housing. Pulsed and then the frequency of the ringing of the protons would indicate local geomagnetic field. Used a lot of power and could not take rapid measurements.
I don’t think the Cesium cell should light up at all on its own - it’s just a neutral gas of Cesium vapor when at temperature. Shouldn’t it be illuminated by a pump/probe light at the other end of the cell at the wavelength of the D1 line (near infrared)?
Oh I see, looking at the episode 1, they do use the ionized cesium lamp to generate the D1 line light than then pumps the second neutral cesium cell that you show here.
That's correct, this is a typical optical pumping magnetometer. I expected to find a transformation of the small Cs balls inside the cell into vapor when heated but maybe it is not so blatant.
Maybe they just rely on partial vapor pressure rather than boiling the whole thing off like in a high pressure lamp.
@@lelabodemichel5162 what temp did you heat it up to?
I don’t remember, something like 150ºC. As said Marc I think only a small quantity of solid Cs transformed to vapor is enough. Unfortunately I didn’t succeed to get the auto-oscillation. I hope I will get more success with the ASQ-81.
Magic in a bottle for sure.
I had a proton precession magnetometer and it was super simple technology. A two opposing coils in a paraffin filled housing. Pulsed and then the frequency of the ringing of the protons would indicate local geomagnetic field. Used a lot of power and could not take rapid measurements.
The MAD system which replaced this- the AN/ASQ-508A- uses both laser and fluxgate magnetometers.
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