ELEXSYS E700/E780

Bruker's 263 GHz Project

mm-Wave Pulsed and CW-EPR

E700 / E780 Bridge
A view into the Bridge

mm-wave EPR instruments are currently available at a few labs around the world and at dedicated high magnetic field facilities. The EPR division of Bruker Biospin has now undertaken the effort to develop the first commercial mm-wave EPR spectrometer for CW and pulse operation. Based on the matured technology of the ELEXSYS line, the system features a “cryogen-free” magnet and a single mode resonator as well as a “non-resonant” probe for large samples. 

Features of E700 / E780 Spectrometer

Development Milestones

December 2008

  • First CW-EPR spectra with non-resonant probe in induction mode obtained.

August 2008

  • Begin assembly and component characterization of prototype IF-Bridge, mm-Wave Bridge, and non-resonant probe.

March 2008

  • Finalized designs of IF and mm-Wave bridges, non-resonant Probe, and Software.

December 2007

  • System layout and definitions complete including IF and mm-Wave bridges, probe and software.

July 2007

  • Bruker BioSpin announces development of a full-fledge mm-Wave EPR system with an innovative superconducting magnet system at the Rocky Mountain Conference for Analytical Chemistry (Breckenridge, CO, USA),.

First Spectra

TEMPO in PS
TEMPOL in polystyrene
5 x 1015 spins
2 mW micorwave power
modulation: 10 G @ 100 kHz
Mn in CaO
Mn2+ in CaO
Dispersion (top) and Absorption (bottom)
sample volume 80μl
0.2 mW microwave power
modulation: 1 G @ 100 kHz