[chimera]

Pair production (electron-positron) is a well-understood phenomenon. I used positrons from a 22Na source as a probe for condensed matter microstructure way back in the bad old days of being a physics grad student. Making the heavier antiparticles is the the real trick. Usually the energy cost is ruinous. I think Fermilab will sell you a nanogram of anti-hydrogen for a few million dollars, all nicely entrained in a magnetic vacuum trap.

[Maurice Tift]

   Fermilab will sell you a nanogram of anti-hydrogen for a few million dollars, all nicely entrained in a magnetic vacuum trap.

  Years from now, we'll look at some old invoices and say - 'Wow! I can't believe I used to pay 2.5 trillion dollars for a milligram of anti-hydrogen!'

[LibWhacker]

Making the heavier antiparticles is the the real trick.

Oh, no! So electron-positron annihilation couldn't be used as a source of energy? Too bad, I thought there was a glimmer of hope here. :-(