Neutron transmutation of [sup 10]B isotope-doped diamond

Jagannadham, K.; Verghese, K.; Butler, J. E.
January 2001
Applied Physics Letters;1/22/2001, Vol. 78 Issue 4, p446
Academic Journal
Diamond samples grown by microwave plasma chemical vapor deposition and doped with [sup 10]B have been irradiated under thermal neutron flux of 10[sup 13] cm[sup -2] s[sup -1] for 76 h to examine transmutation of [sup 10]B to [sup 7]Li and the attendant lattice damage to diamond. To prevent graphitization and formation of diamond-like carbon, continuous cooling in water is provided during irradiation. Characterization of the diamond samples using Raman spectroscopy, photoluminescence spectroscopy, and secondary ion mass spectrometry showed that diamond remained crystalline without a major damage. Formation of vacancies due to neutron irradiation is inferred from photoluminescence spectroscopy.


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