The pressures at the center of a nuke are greater than in the earth's core?

[Researcher X]

Wikipedia has an Ivy Mike level nuke at 530 TPa, and the core pressure is at 380 GPa. That's a factor of over 1000 times. I'm wondering whether these are exactly comparable, since the pressure at the core is constant, whereas in a nuke, it's relatively brief.

A multi walled carbon nanotube was tested with a tensile strength of 63 Gigapascals. Apparently, they have a theoretical upper limit of 300 GPa, so that's a bit short of surviving at the core. Is that a theoretical upper limit on strength full stop or just nanotubes? Then, there's the temperature which is similar to the surface of the sun at the core as well.

Is there any hope of making a vehicle which could survive down there? I take it no material can survive within ten feet of a nuclear explosion though.

 

[mgb_phys]

Wikipedia has an Ivy Mike level nuke at 530 TPa, and the core pressure is at 380 GPa. That's a factor of over 1000 times. I'm wondering whether these are exactly comparable, since the pressure at the core is constant, whereas in a nuke, it's relatively brief.

You can get even higher pressures with Inertial Contained Fusion - but not for very long!

A multi walled carbon nanotube was tested with a tensile strength of 63 Gigapascals. Apparently, they have a theoretical upper limit of 300 GPa

There is a lot of difference between the theoretical strength of a material based purely on atomic bonds and the real strenght of an object with cracks, joints etc.
You can grow single crystals of metals that are many times stronger than a metal bar - but they aren't much practical use.

 

[astrokreng]

I can say that the pressures at the center of a nuclear explosion are indeed greater than in the Earth's core. However, it is important to note that the conditions are not exactly comparable. The pressure at the Earth's core is constant and sustained, while the pressure at the center of a nuclear explosion is relatively brief and intense.

The Ivy Mike level nuke mentioned on Wikipedia has a pressure of 530 TPa, which is over 1000 times greater than the pressure at the Earth's core of 380 GPa. However, this does not necessarily mean that the materials used in a nuclear bomb are stronger than those in the Earth's core. The strength of a material is not solely determined by its ability to withstand pressure, but also by other factors such as temperature, composition, and structure.

The multi walled carbon nanotube mentioned in the content has a tensile strength of 63 GPa, which is significantly lower than the pressure at the Earth's core. However, this does not mean that it is the theoretical upper limit of strength for all materials. The theoretical upper limit for strength can vary depending on the material and its structure.

In terms of creating a vehicle that could survive in the Earth's core, it is currently not possible with our current technology. The extreme temperatures and pressures, as well as other factors such as the corrosive environment, make it extremely challenging to develop materials that can withstand these conditions. However, ongoing research and advancements in materials science may lead to the development of materials that can withstand these extreme conditions in the future.

In terms of surviving within ten feet of a nuclear explosion, it is highly unlikely for any material to survive under such intense heat and pressure. The blast of a nuclear explosion can reach temperatures of millions of degrees and can create pressures that are many times greater than the Earth's core. Therefore, it is not possible for any material to survive within such close proximity to a nuclear explosion.