title: Electron spin relaxation of the electron paramagnetic resonance spectra of cytochrome c.
abstract: The progressive power saturation of the electron paramagnetic resonance (EPR) spectrum of ferricytochrome c has been investigated in order to determine the spin-lattice relaxation time of the center. We have generalized the usual saturation treatments to include the effects of extended sample size and anisotropic g values as well as derivative spectra. We find that the results are consistent with a T7 power law in the temperature range 6--25 K. At temperatures above 25 K the relaxation time is too short for successful power saturation. Observation of the linewidth shows that the relaxation behavior continues as a first-order Raman process to 50 K.
mesh_terms: D003574:Cytochrome c Group; D004578:Electron Spin Resonance Spectroscopy; D008433:Mathematics; D013059:Spectrum Analysis, Raman; D013696:Temperature
chemical_list: D003574:Cytochrome c Group