Nmr field probe

X-band cw-EPR measurements were performed on a Bruker E500 ELEXSYS
spectrometer equipped with the Bruker dual-mode cavity (ER4116DM)
and an Oxford Instruments helium flow cryostat (ESR 900). The microwave
bridge was the high-sensitivity bridge Super-X from Bruker (ER-049X)
with integrated microwave frequency counter. The magnetic field controller
(ER032T) was externally calibrated with a Bruker NMR field probe (ER035M).
Spectral analysis and simulations were handled by using the EasySpin
program.^{34 (link)}

Continuous-wave (cw) X-band EPR measurements
were performed on a Bruker E500 ELEXSYS spectrometer equipped with
the Bruker dual-mode cavity (ER4116DM) or a standard cavity (ER4102ST)
and an Oxford Instruments helium flow cryostat (ESR 900). The microwave
bridge was a high-sensitivity Super-X bridge (Bruker ER-049X) with
integrated microwave frequency counter. The magnetic field controller
(ER032T) was calibrated with a Bruker NMR field probe (ER035M). EPR
simulations have been done with our own routines, esim_gfit and esim_sx.
For spin quantitation, the experimental derivative spectra were numerically
integrated by using the routine eview, and the results were corrected
for their g value dependence for field-swept spectra
by using Aasa and Vänngård approximation,^{32 (link)} i.e. dividing the integrals by the factor,