What is currently the problem scientists are having with recreating nuclear fusion?

Question

I dont get it what is the special ingredient do they need for nuclear fusion to occur?

Answer 1

The amount of power consumed even to create the tiny experimental efforts of fusion are the main stumbling block.

Scientists around the world are using particle accelerators such as CERN in France/Switzerland to investigate ways of using some of the theoretical particles such as bosons as possible sources of that power.

The next problem once you have the power is how to control it, but that is further down the road!

Answer 2

Temp control is a problem! Currently using magnetic fields. Check out....

http://www.iter.org/

Answer 3

The current big problem is getting dueterium, hydrogen and helium  hot enough, and under enough pressure to initiate and sustain a fusion reaction. Remember, fusion is the same process that powers the sun. Similar conditions must be approximated on earth, controlled, and maintained. It has been done on a very very small scale, so we know it is possible.

Answer 4

Fission is the splitting of the atom and resulted in the first atomic bomb and then the first nuclear reactors for energy production.

Fusion is the combining of atoms to form one larger one. This process can either release or consume energy depending on the size of the particles.  Optimally, fusion reactions can produce anywhere from 400 to 500x more power than a fission reaction, which is what powers today's nuclear weapons. Getting the energy under control is the problem. You need enough power released to make the process worth while but you must keep it within reason.  

They CAN produce the reaction so there is no "special ingredient" as you say, they just don't have a reactor built that can accelerate particles fast enough consistently enough for power production.