Radiation-induced defects in a natural type IIa diamond were studied by ana
lysis of the electronic absorption spectra in the visible range measured up
on annealing of the pre-irradiated samples for various times at 550 degrees
C. Equations describing the growth and decay of intensity for the absorpti
on peaks of seven defects are presented. (C) 2000 MAIK "Nauka/Interperiodic
a".