Yes, it is possible from many years; but this is a very big and expensive installation.
particle accelerator
No, a particle accelerator cannot give you superpowers.
Nothing unless the atoms form a target. A PARTICLE accelerator accelerates PARTICLES not atoms.
Man-made elements are made in a particle accelerator.
Particle Physics
A particle accelerator, such as a synchrotron or cyclotron, is used to make subatomic particles move faster by applying strong magnetic and electric fields to propel the particles to higher speeds.
Cyclotron
The Compact Particle Accelerator - 2012 was released on: USA: 8 March 2012 (internet)
Sometimes artificial transmutations will not occur unless bombarding particles are moving at extremely high speeds, and since a particle accelerator can accelerate a particles speed very close to the speed of light, then you would have to use a particle accelerator to make the transmutation happen.
splits atomes
a particle accelerated by a particle accelerator - That's my best guess
Particle accelerator