ELEXSYS E500 CW-EPR

The X-Band ELEXSYS instruments are equipped with the SuperX feature. SuperX comprises a selected high-power, ultra-low-noise Dual Gunn source, the SignalMaster lock in detector (100 Hz to 100 kHz), and the super-high-Q cavity.
 
The combination of these devices has resulted in an order of magnitude increase in sensitivity for CW-EPR in X-band. As one measure for sensitivity we specify a weak-pitch signal-to-noise of 3000:1 for the E500 CW-EPR spectrometer.

As another demonstration of the improvement in sensitivity, we show here the spectra obtained from a metmyoglobin peroxyl radical in a standard cavity (left) and with the SuperX system (right). What appeared as a weak and uninformative spectrum with the standard cavity is a clear and well-resolved spectrum with the new SuperX system.

The SuperX feature of the ELEXSYS series sets the new standard in CW-EPR sensitivity. The WEAK PITCH sensitivity now routinely achieved is:
3000 : 1

The SuperX feature consists of:

• The SuperX X-Band Microwave Bridge: ER 049X SuperX
• The Super-High-Q Cavity: ER 4122SHQE
• A lock-in detector from the SignalMaster series: E27H