Electron paramagnetic resonance high field

Konovalova, T. A., L. D. Kispert et al. (2004). Multifrequency high-field electron paramagnetic resonance characterization of the peroxyl radical. Location in horse heart myoglobin oxidized by H202. J. Phys. Chem. BIOS 11820-11826. 

Foumel, A., Gambarelli, S., Guigliarelli, B., More, C., Asso, M., Chouteau, G., Hille, R., and Bertrand, P. 1998. Magnetic interactions between a 4Fe-4S l+ cluster and a flavin mononucleotide radical in the enzyme trimethylamine dehydrogenase a high-field electron paramagnetic resonance study. Journal of Chemical Physics 109 10905-10913. 

It is important to realize that no one method of spectroscopy is clairvoyant. Electron paramagnetic resonance spectroscopy cannot sense low-spin Fe(II) as this state is diamagnetic, nor reliably the high-spin Fe(II) state because of rapid spin-lattice relaxation, large zero-field splittings or both Mossbauer spectroscopy cannot distinguish Fe(III) spin states... 

The nature of the Jahn-Teller interaction is such as to yield several vibronic states, within just a few wave numbers of the ground state. These states have very different expectation values for the electronic and nuclear co-ordinates, and we shall now examine how the low-lying vibronic structure may be elucidated by the followings modem physical techniques high-field, multifrequency electron paramagnetic resonance (HFMF EPR) magnetic circular dichroism (MCD), and extended X-ray absorption fine stmcture spectroscopy (EXAFS). The recent advent of HFMF EPR... 

Sx, Sy, and Sz are the three components of the spin operator, D and E are the anisotropy constants which were determined via high-frequency electron paramagnetic resonance (D/kB 0.275 K and E/kB 0.046 K [10]), and the last term of the Hamiltonian describes the Zeeman energy associated with an applied field H. 

Moebius, K. (Ed.). (2001) High-Field and High-Frequency Electron Paramagnetic Resonance. [In Appl. 

Moll, H. P. (1994). Electron Paramagnetic Resonance in High Magnetic Field using Far Infrared Lasers Electron Spin Echoes at 604 GHz. Diplomarbeit, Universitat Konstanz. 

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