There are probably laser storms at that depth.
I'm entirely new here, although I have been following the interesting chat on this forum for a few months now. Salutations to all space enthusiasts!
This thread got my gray matter to workin', and I was thinking of the last post here describing some of the depths we've achieved in our oceans on Earth. The bathyscaphe Trieste supposedly could withstand a bit more depth than the deepest ocean. The project's website claims about 50,000 ft theoretically.
Now this vessel had a pressure sphere to hold people in a normal atmospheric pressure at these crazy depths. My question to anyone knowledgeable in this field is thus: If we remove the need for a pressure sphere (for atmospheric probes to Jupiter or Saturn) can 50,000 feet made at least a BIT deeper? Now we obviously couldn't get down to the depths of this so-called 'neon rain' - which sounds like a hackneyed Prince album - but maybe down to 30,000 m?
The U.S. Army uses instrumentation and telemetry systems which are embedded in direct-fire kinetic projectiles. These radio back data from, say, a tank projectile. These can survive 100,000 G acceleration and 100,000 psi (6,894 bar): http://www.patentstorm.us/patents/63...scription.html
I don't know how deep in Jupiter's atmosphere 100,000 psi would be. However one of the articles says hydrogen becomes metallic at 10,000 to 13,000 km depth, which equates to roughly 4 million bar (58 million psi). That's roughly the depth where the helium/neon interaction mentioned in the article happens.
However other more recent data indicates hydrogen becomes metallic at about 1 million bar, (14.5 million psi), which would be closer to Jupiter's surface: http://www3.interscience.wiley.com/j...TRY=1&SRETRY=0
Unfortunately even that is 10x the maximum pressure of the Army Hardened Subminiature Telemetry and Sensor Systems (HSTSS).
I don't know if our current materials and electronic science could devise a telemetry probe which survived at 1 million bar. I tend to doubt it.
If it were just pressure, the problems wouldn't be so great. But there's also the issue of transmission (the deeper the probe, the more difficult it will be for any RFs to escape), and the heat, which long before then would make Venusian conditions look like Dutch Harbor.
Personally, I think Saturn would be a better bet for a really deep probe; the temperature and pressure gradients are much less than Jupiter's, and the lower gravity would make for a slower descent.
That sounds like a really great title for a novel. Just saying.