Now, I guarantee that this black hole is DANGEROUS!!!!! So please, make at your own discretion.
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Now, for the fun part.
Step 1: Buy a 10000 Terahertz Laser
You can find such lasers at price ranges from $10000 to $10000000. Please, I don't guarantee that all 10000 terahertz lasers will be enough, but THAT, is where you come in. Find the correct laser. Please find a good intensity as well. (More intensity, the better.) You can use lenses to increase intensity. I would prefer you to RENT a laser, because it is cheaper. If you want to, you can buy one. Or make one, if you can be sure they won't implode while you do this work.
Also, buy a beam splitter so you can split the laser to go all around the bead in the reaction chamber. That is why it is so powerful. Consistent energy from all sides.
Step 2: Make a Reaction Bead
One isotope each, you will need to place these in a special vacuum sealed, thin layered glass bead.
Make sure it is COMPLETELY airtight!! If it is not, your experiment will go POOF!
Also, if your isotopes are not completely alone, I ditto the sentence above /\ /\ and you will be a sad kitty.