How much force do I need to create a fusion explosion or plasma with telekinesis?

Suppose a person, standing at sea level, could use telekinesis to exert a force around a sphere with a 10 cm diameter so that it becomes one-way permeable to air. As time goes on, the sphere becomes more and more filled with air and therefore hotter, more dense, and exerts pressure outwards.

How much force would the person have to use on that sphere:

1. to keep the air in there?
2. for that air to turn into a plasma or for it to cause a fusion explosion?

Bonus questions:

1. How much time would it take?
2. What would it look like?

To be clear, I need an answer in Newtons or a similar unit to compare against other forces in my story.

posted about 6 years ago

Logical Sparrow‭

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