EPR Equipment
From NMR Wiki
EPR equipment, are generally more open to the user, so that the user could easily manipulate at variable temperature, or with a light excitation, or electrochemical facilities.
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EPR instruments
Bruker
- ESP 300E
- EMX 500
Resonators
Bruker
- ER-4117D-MVT - for continuous-flow studies with low reactant consumption. Active volume - 2 μL.
Continuous wave EPR
9 and 35 Ghz EPR are usually based on electromagnet, that's possible, because EPR has much lower field stability (and homogeneities ) requirement than NMR. The manipulation of the microwave are done using waveguide, and the experiment are frequently operated in the continues wave mode ( because it's difficult to make short enough pulse to irradiate the whole peak ). Basic correlation experiment with atoms are possible using ENDOR experiment, who saturate with a strong RF field nucleus, and record the variation in the EPR signal at a given frequency.
Pulsed EPR
Pulsed EPR provide new experiment possibilities, like in pulsed NMR, correlation experiment are possible, allowing measurement of long range dipolar coupling.
The Magnetic Resonance Lab at the Technion provides various systems for pulsed ESR and pulsed ESR imaging http://www2.technion.ac.il/~ab359
Cryostats
ER 4112HV Helium Temperature Control System - cryostat for Bruker EMX and ELEXSYS systems
ESR900 continuous flow cryostat
Closed cycle cooling systems
This kind of equipment allow to work at very low temperature, sometime peaks could even not observed at higher temperature.
Advanced Research Systems offers two closed cycle cooling systems (cooling down to 2K and 4K) suitable for EPR - WMX15 & DMX15
