Natural and Laboratory α-Particle Irradiation of Diamond

E. R. Vance1 and H. J. Milledge
Chemistry Department, University College, London
1Present address: Dept. of Solid State Physics, Australian National University, Canberra, A.C.T. 2600, Australia.

Summary: To produce a lattice expansion readily detectable by conventional X-ray photographic means in α-irradiated diamond, a dose of order 1018 α.cm−2 is required. Such a dose could be produced by pitchblende in ∼2 × 108 yr. and a previously reported lattice expansion in a natural diamond could therefore have occurred by long-term contact with a radioactive material. α-particle doses greater than ∼1014 cm−2 produce observable green colouration on the surface of an initially colour-less diamond.

Mineralogical Magazine; September 1972 v. 38; no. 299; p. 878-881; DOI: 10.1180/minmag.1972.038.299.11
© 1972, The Mineralogical Society
Mineralogical Society (