Ma. Leawilson et Jn. Lomer, ELECTRON-SPIN-RESONANCE OF A NEW DEFECT R13 AND ADDITIONAL DATA ON THE DEFECT R1 IN IRRADIATED DIAMOND, Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties, 74(3), 1996, pp. 685-695
A new low-symmetry S = 1 electron spin resonance centre with lines wel
l separated from the g = 2 position has been observed in electron-irra
diated type IIa diamond. Six groups of lines R1a-R1f with the same sym
metry as RI but with slightly smaller D values were also observed. The
C-13 hyperfine structure of R1 has been analysed and possible models
for R1 are discussed.