Experimental Section & Acknowledgements
"We wish to thank ISU Chemical Instrumentation Facility staff members <insert name(s) here> for training and assistance pertaining to the Elexsys 580 FT-EPR results included in this publication."
The EPR system has both CW and pulsed/FT X-band capabilities. The system has four resonators for facility use, including two CW resonators (SHQE and aqueous resonators), and two FT resonators (dielectric and split-ring resonators). Additional accessories and X-band resonators can be supplied by individual research groups for special projects on the E580. The instrument is manufactured by Bruker Corporation (Billerica, MA and Karlsruhe, Germany). Generally, staff assistance is required when using this instrument.
The amount of additional experimental detail necessary will depend upon whether you are preparing a manuscript, a poster, a presentation, or including the information in your thesis.
Saving an experiment on the ELEXYS E580 EPR produces two data files, with the extensions *.DTA and *.DSC. Opening the *.DSC file with a text editor will allow you to view all of the acquisition parameters. (Notepad/Wordpad on PC or TextEdit on Mac, or any editor of your choice). A portion of an example .DSC file is pasted below, with important parameters in red. These parameters will vary from one experiment to another.
AllegroMode False CenterField 3335.00 G Delay 1.0 s FieldFlyback On FieldWait Wait LED off GFactor 2.000000 MeasuringHall False SetToSampleG False StaticFieldMon 3300.000 G SweepDirection Up SweepWidth 70.0 G WidthTM 200.0 G AcqFineTuning Never AcqScanFTuning Off AcqSliceFTuning Off BridgeCalib 100.0 Power 1.985 mW PowerAtten 20 dB QValue 2500 AFCTrap True AllegroMode False AllowShortCt False Calibrated True ConvFact 9.271e-09 ConvTime 20.48 ms DModAFCTrap True DModAmp 1.00 G DModCalibrated True DModDetectSCT First DModEliDelay 1.0 us DModExtLockIn False DModExtTrigger False DModFieldMod First DModGain 60 dB DModHighPass True DModIntegrator True DModModOutput Internal DModSignalInput Internal DModTimeConst 1.28 ms DoubleModFreq 5.00 kHz DoubleModPhase 0.0 DoubleMode False EliDelay 1.0 us EnableImag Disable ExtLockIn False ExtTrigger False Gain 50 dB Harmonic 1 HighPass True Integrator False IsCalibExp False ModAmp 1.000 G ModFreq 100.00 kHz ModInput Internal ModOutput Internal ModPhase 0.0 Offset 0.0 % QuadMode False QuadPhase 90.0 ResCenter 62.5 mm ResLength 40 mm Resolution 4096 Resonator 1 SctNorm True SctRevision DSC2 SignalInput Internal SpuExtension False SweepTime 83.89 s TimeConst 0.08 ms TimeExp False TuneCaps 48