Effects of spin transitions degeneracy in pulsed EPR of the fullerene C70 triplet state produced by continuous light illumination

► Echo-detected electron paramagnetic resonance spectra of fullerene C70 triplet state were obtained at its equilibrium state. ► New features at the spectrum center part were observed. ► Echo-detected EPR spectra were reproduced by numerical simulation taking into account simultaneous excitation of two-allowed electron-spin transitions of the triplet state.