ESR of an O3-centre in KCl

Abstract
By means of ESR an ozonide molecular O3- ion was detected in X-irradiated KCl. The principal values of the g-tensor (2.0032, 2.0182, 2.0118) are in excellent agreement with the values found in other host lattices and with CNDO calculations performed earlier. All measurements were carried out at liquid-helium temperatures.