CARBON in COMPUTATION and EXPERIMENT
- Carbon exists in two common forms - graphite and diamond.
Graphite is a conductor and diamond an insulator. Graphite is soft and
diamond is hard.
- When diamond samples are sufficiently
damaged by irradiation, and then annealed, they turn into conductors.
- Diamonds are used as insulators in industry; so if they are damaged
and turn to conductors delicate equipment becomes useless.
- Need to understand the damage process to know how to avoid it.
- Rafi Kalish and collaborators hypothesised that the irradiation damage
followed by annealing
turns diamond into graphite in small regions. At a sufficient concentration
percolate and make a
conducting path thru the sample.
BUT NO-ONE WAS SURE HOW THIS HAPPENED, OR HOW TO STOP IT