Multiple frequency the CW - EPR

Multi-frequency EPR can play under different frequency of EPR spectroscopy analysis.At present, brooke's EPR products series of microwave frequency including two orders of magnitude:

L - and S - Band: 1 GHz and 3.5 GHz

X - Band: the most commonly used frequency of 9.8 GHz

Q - Band: 34 GHz

W - Band: 94 GHz

Mm - wave: 263 GHz

The high frequency of EPR advantages obviously, but low frequency EPR is bulk sample, especially the best choice for living research (ELEXSYS E540).

Multi-frequency EPR spectrum can be fitting more efficiently.Sports effect, moreover, can be in a wide range of time for study.

Multiple frequency the CW - EPR

Most of the CW EPR system on x-band as working frequency.Therefore, entering the multifrequency the CW - the first step of EPR, is to use another operating frequency.In terms of conventional the CW - EPR spectrum, 34 GHz Q band is the best choice, because:

Q band can provide Zeemann energy is three times higher

Can hold the sample volume is still considerable, diameter up to 3 mm

Available with optional window or Q band probe function of ENDOR

The following table lists the most common form of EPR spectrum, their frequency range, and corresponds to the free radical species g = 2 of the magnetic field value (details refer toWhat is the EPR?The CW EPR theory).All these frequencies are usually available in matching brooke magnet system under the premise of providing series.

Multiple frequency FT - EPR, ENDOR and ELDOR

Brooke's multifrequency EPR is not limited to the CW - EPR.Brooke's EPR products in continuous wave and pulse mode can be truly multi-frequency and more resonance EPR, ENDOR and ELDOR.For example, because of the concept of intermediate frequency (IF) x-band E580 system can easily upgrade to Q band (SuperQ - FT).