isotopic number การใช้

• The 12 C isotopically pure, ( or in practice 15-fold enrichment of isotopic number, 12 over 13 for carbon ) diamond gives a 50 % higher thermal conductivity than the already high value of 900-2000 K ) for a normal diamond, which contains the natural isotopic mixture of 98.9 % 12 C and 1.1 % 13 C . This is useful for heat sinks for the semiconductor industry.