Abstract
A theoretical study of the effect of microwave (MW) fields of finite amplitude on the process of pulsed electron-electron double resonance (PELDOR) signal formation is carried out. It is shown that the behavior of the experimentally observed values can be described by four vectors of partial magnetizations whose motion is reduced to precession in effective magnetic fields. In the case of strong spin-spin interaction, the PELDOR effect can be observed when a sufficiently powerful MW field is applied at pumping frequency to affect both components of the Pake doublet. The possibility of a “two-frequency” spin echo to appear under the action of two pulses with different carrier frequencies in the system where the inhomogeneous broadening of the electron spin resonance line contour is mainly determined by the dipole-dipole interaction is demonstrated.
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Maryasov, A.G., Tsvetkov, Y.D. Formation of the pulsed electron-electron double resonance signal in the case of a finite amplitude of microwave fields. Appl. Magn. Reson. 18, 583–605 (2000). https://doi.org/10.1007/BF03162305
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DOI: https://doi.org/10.1007/BF03162305