ENDOR Extension

ENDOR spectroscopy is a powerful method to characterize hyperfine couplings in paramagnetic species. The information that can be obtained by this experiment is often complimentary to parameters determined in an ESEEM or HYSCORE experiment.
EDNOR Extension

EDNOR Extension

The Bridge12 ENDOR Extension to the X-Band IF system is a compact module to extend the system to perform pulsed ENDOR spectroscopy. The system has a compact footprint of just 13.4 in. by 12.5 in., which includes already the integrated 150 W RF amplifier (options for higher power available). The system is fully compatible with SpecMan4EPR.

AWG Pulses for ENDOR

AWG Pulses for ENDOR

Traditionally, RF pulses in ENDOR spectroscopy are created using an RF synthesizer and pin diode switches. However, using modern RF technology, our ENDOR extension uses an Arbitrary Waveform Generator (AWG) to create pulses. This allows the user to create shaped RF pulses just like it is done in modern NMR spectroscopy.

General References

Below, find some general literature references for ENDOR spectroscopy.

  • Kulik, Leonid, and Wolfgang Lubitz. “Electron-Nuclear Double Resonance.” Photosynthesis Research, 2009. https://link.springer.com/article/10.1007/s11120-009-9401-y.
  • Tkach, Igor, Isabel Bejenke, Fabian Hecker, Annemarie Kehl, Müge Kasanmascheff, Igor Gromov, Ion Prisecaru, Peter Höfer, Markus Hiller, and Marina Bennati. “1H High Field Electron-Nuclear Double Resonance Spectroscopy at 263 GHz/9.4 T.” Journal of Magnetic Resonance 303 (June 2019): 17–27. https://doi.org/10.1016/j.jmr.2019.04.001.

Technical Specifications

  • Operation Frequency: 500 kHz-150 MHz (higher frequencies optional)
  • Maximum Pulsed Output Power: 150/500 W
  • AWG Generated Pulse Sequence
  • Maximum Duty Cycle: 20 %
  • Maximum Pulse Length: 100 ms
  • Fully compatible with SpecMan4EPR

Any questions?