The Chemical Instrumentation Facility anticipates the arrival of a Bruker ELEXYS E580 FT-EPR system in late spring 2013. The new EPR will have both CW and pulsed/FT X-band capabilities. The new system will be located in 1708 Gilman Hall. Currently, 1702-1708 Gilman houses two NMR spectrometers and a Micromeritics ASAP 2020 Physisorption BET used primarily by researchers in Chemistry, Materials Science & Engineering, and Chemical & Biological Engineering. The location of the E580 EPR in 1708 Gilman will allow for easy access to researchers from a variety of departments on central campus. Existing helium recovery lines will be used in conjunction with the EPR low temperature accessory. Access to the room is controlled by ISU card and can be obtained by filling out an Access Request Form and returning it to 1234 Hach. 

Click here to view a PDF from Bruker describing the basic science of EPR and a variety of modern EPR applications and capabilities. Many of the capabilties described in the handout will be available on the new E580. 

Image from Bruker EPR

Magnet and Power Supply:

• 10" double yoke magnet, 72 mm air gap.
• 12 kW power supply.
• Maximum field strength: 14.5 kG.

Accessories:

• X-band liquid helium variable temperature system, capable of 4 K (LHe) and 77 K (LN2) operation.
• UV accessory and light pipe.
• Linux acquisition computer running Xepr acquisition software and XSophe simulation software.

Resonators:

• High sensitivity resonantor with optical port used for CW experiments. Weak pitch: 2500:1
• Dielectric resonator module, universal probe for FT-EPR experiments. 
• Split ring resonator module for DEER, ESEEM, ELDOR, saturation recovery.
• Dielectric room temperature aqueous resonator for aqueous bilogical samples. 

Old Bruker ER200D, comissioned in 1980 and decommissioned in 2012:

• QA/QC protocols
• Experimental section and acknowledgements