What Causes Deuterium Fusion in Massive Planets?

It is the combination of high pressure and temperature that allow the atoms to overcome the Coulomb barrier and fuse.
  • #1
NoobixCube
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I have often seen it quoted that above the mass of 13 Jupiters, Deuterium fusion is able to begin. Is this because the gravitational field of the planetary body is strong enough to give the molecules enough kinetic energy to overcome the Coulomb barrier and fuse?
 
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  • #2
Yes, although not quite kinetic energy. The pressure and temperature push the atoms together and overcome the coloumb barrier.
 
  • #3
Thanks!
 
  • #4
NoobixCube said:
I have often seen it quoted that above the mass of 13 Jupiters, Deuterium fusion is able to begin. Is this because the gravitational field of the planetary body is strong enough to give the molecules enough kinetic energy to overcome the Coulomb barrier and fuse?

Yes, this is correct. It is not "not quite" kinetic energy, it is very much exactly kinetic energy.
 

1. What is Deuterium Fusion mass limit?

The Deuterium Fusion mass limit refers to the maximum mass of deuterium that can undergo fusion in a given system. It is the amount of deuterium required to sustain a fusion reaction without collapsing due to gravity.

2. Why is the Deuterium Fusion mass limit important?

The Deuterium Fusion mass limit is important because it determines the maximum size and mass of a fusion reactor that can be built. It also affects the efficiency and stability of the fusion reaction.

3. What factors affect the Deuterium Fusion mass limit?

The Deuterium Fusion mass limit is primarily affected by the temperature and pressure of the system, as well as the confinement time of the deuterium plasma. Other factors include the density of the deuterium and the strength of the magnetic field used to contain the plasma.

4. How is the Deuterium Fusion mass limit calculated?

The Deuterium Fusion mass limit is calculated using various equations and models, such as the Lawson criterion, which takes into account the temperature, density, and confinement time of the plasma. It also considers the cross-section of the fusion reaction and the energy balance of the system.

5. What are the current challenges in reaching the Deuterium Fusion mass limit?

The current challenges in reaching the Deuterium Fusion mass limit include creating and sustaining the high temperatures and pressures required for fusion, as well as finding efficient and stable ways to contain and control the deuterium plasma. Additionally, developing materials that can withstand the extreme conditions of fusion reactions is also a major challenge.

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