A few questions about atoms splitting and some about cold fusion

[Qaiphyx]

A few questions about atoms splitting and some about "cold fusion"

Ok first I was thinking, when atoms fuse, they release energy, when an atom is split... it releases energy. Now, since energy is not created nor destroyed but only transferers, if you fuse an atom and then split it again, what will happen when you split it since it lost energy when it was fused?

Then on cold fusion, when pons and fleishman did their estimate on how much atmospheric pressure palladium puts on hydrogen when its absorbed, it was a lot less than nessasary for fusion, does anyone have the exact numbers? such how much pressure they had in the palladium and how much is required for hydrogen atoms to fuse?

 

[DaveC426913]

Ok first I was thinking, when atoms fuse, they release energy, when an atom is split... it releases energy. Now, since energy is not created nor destroyed but only transferers, if you fuse an atom and then split it again, what will happen when you split it since it lost energy when it was fused?

Not any atoms.

You fuse hydrogen into helium. The product is slightly less massive than the ingredients. The missing mass is released as energy.


You fission uranium into (say) rubidium and cesium. The two products are slightly less massive than the initial ingredient, and the missing mass is relased as energy.

Conversely,
To fission helium back into hydrogens, you'd have to add energy.
To fuse rubidium and cesium into uranium, you'd have to add energy.

 

[Qaiphyx]

Not any atoms.

You fuse hydrogen into helium. The product is slightly less massive than the ingredients. The missing mass is released as energy.


You fission uranium into (say) rubidium and cesium. The two products are slightly less massive than the initial ingredient, and the missing mass is relased as energy.

Conversely,
To fission helium back into hydrogens, you'd have to add energy.
To fuse rubidium and cesium into uranium, you'd have to add energy.

Ohh ok. That makes a lot more sense lol

This forum is freakin awesome.

 

[Astronuc]

One has to understand the concept of nuclear binding energy.

http://hyperphysics.phy-astr.gsu.edu/hbase/nucene/nucbin.html#c2

 

[Marcwhydothe]

1,1H + 3,1H --> 4,2He loss in mass is = energy released fusion reaction of the nuclei
requires massive activation energy