A. Cox et al., C-13, N-14 AND N-15 ENDOR MEASUREMENTS ON THE SINGLE SUBSTITUTIONAL NITROGEN CENTER (P1) IN DIAMOND, Journal of physics. Condensed matter, 6(2), 1994, pp. 551-563
NeW ENDOR measurements on the single substitutional nitrogen centre in
diamond are reported. The CW-ENDOR mechanism utilizes cross relaxatio
n, and measurements have been made on both N-14 and N-15, as well as t
he first detailed C-13 ENDOR study on the isotope at the natural abund
ance of 1.1%. The change in EPR intensity induced by driving the C-13
nuclear transitions was approximately equal to 100% of the EPR intensi
ty of the appropriate C-13 hyperfine satellite. The assignment of C-13
hyperfine coupling matrices with specific sites is considered, and pr
edictions made about the signs of some of the C-13 hyperfine interacti
ons.