Investigation of adamantane–diamond transformation. The radical mechanism of the formation of diamond nanoparticles under shock-wave action on adamantane

Resumo

The use of the modern installations with the synchrotron radiation allowed obtaining the information about the dynamics of rapid transformation of adamantane into diamond within 2 μs under shock-wave action with nanosecond time resolution. The yield of diamond was 30%. An explanation of adamantane-diamond transformation is proposed. Hydrogen evolved during adamantane decomposition easily diffuses over diamond lattice. However, during synthesis time (~1 μs) hydrogen does not have enough time to go out of diamond particles. Experiment was made at accelerate complex VEPP-3/VEPP-4.