EPR - ELEXSY

ELEXSYS - II E600/680

94 GHz frequency/EPR and ENDOR

ELEXSYS EPR spectrometer series system, including two W band now E600 and E680.The former the CW - EPR experiments for 94 GHz is optimized, while E680 can work in the CW and FT mode.The advanced research instrument in provides maximum performance and flexibility at the same time, also easy to operate.Therefore, the high frequency of all the advantages that the EPR has become available.

This setting provides precise final working frequency - this is a prerequisite for all g factor measurement.Modular structure can guarantee the flexibility of the system, the system can be set to the CW or FT/the CW combination instrument.Just press the button, the system can switch from the CW operation to the FT, even from W band switch to the X band.Variable temperature W band TeraFlex probe working temperature in the range of 4 K to 300 K.

Samples can be exchanged at any temperature.High precision cavity matching, tuning and sample positioning mechanism, make the samples of high flux is easy to handle.For bridge and tuning of resonator, the intermediate frequency will be generated and detected 400 MHz wide tuning show.All these hardware functions by Xepr software for its easy to learn a graphical user interface to supplement.

The main features

W band bridge
  • Within 60 dB W band precisely set the microwave power.
  • All related to the FT - EPR parameters, such as pulse power, the width and phase, will be in the X band intermediate frequency (IF) on setting and monitoring.
  • Through the combination of fixed frequency resonator and PLL circuit, realizes the high spectral purity and sensitivity.

Other features

  • W band high magnetic field need required for operation of the superconducting magnet, but not all of the superconducting magnet is suitable for the EPR.Therefore, EPR 6 t SC is studied on the basis of the development of the EPR spectrum.
  • With high frequency EPR, especially impulse the development of EPR, this technology is becoming more and more valued by EPR spectrum at.According to the pulse of EPR experiments, using more microwave power can gain some advantage.Against such a situation, brooke provides two W band bridge upgrade products.

The technical details

  • 94 GHz working frequency
  • The CW and FT two operating modes
  • ELDOR and ENDOR
  • 100 mW, 400 mW, and 2 w power is optional
  • Single mode resonator
  • Sampling temperature: 4-300 K
  • Superconducting magnet: 6 T main coil, 0.2 T sweep coil

Find out more

Konstanz professor of chemistry at the university of Malte Drescher EPR
What is the EPR?
Use EPR to see more

The advantages of high frequency EPR

Coal samples under 94 GHZ MW - Nutation.A 400 mW power upgrade device Nutation cycle of 62 ns.
  • Due to the magnetic field, higher spectral resolution.
  • Because of the resonator filling coefficient is higher, for improve the detection sensitivity of limited number of samples.
  • In the study of chaotic systems, the direction selectivity increased.
  • Because quantum microwave energy better, can obtain zero field split larger spin system.
  • Better separation of ENDOR spectrum of different nuclei.
  • To improve the low frequency of the nuclear spin ENDOR detectable.
  • Due to reduced the high field at the time of the second order effects, simplify the spectrum.

SC: EPR 6 t W band superconducting magnets

SC: EPR 6 t W band superconducting magnets

Superconducting magnet has the level field, the second generation of W band 6 t sweep range of main coil and permanent fuses and 2 kG high-resolution frequency sweep coil.The most advanced design features a main coil and magnet frequency sweep coil permanent fuses, compared with the similar design, helium stay longer.The main coil and scanning coil is connected to the power of the new development.Through the new software interface, just click the mouse can to switch between the two operating modes, operation is simple and safe.

W high power band bridge to upgrade

Firefox 4 pulse time trajectory.400 mW high power upgrade, red, and 100 mW high power upgrades (green, below).

Bandwidth for need short pulse, and a big motivation pulse EPR measurement (ESEEM, DEER and FT), there are three kinds of bridge upgrade: W band 2 W, 400 mW and 100 mW high power upgrade.400 mW high-power upgrade edition and standard W band resonator for 16 ns pulse length (90 °).And 100 mW high power upgrade conventional 40 ns pulse length (90 °).

In firefox 4 pulse experiments, it is easy to observe the benefits of a 400 mW high-power upgrade.Shorter pulse length resulted in higher signal-to-noise ratio of the spectrum of DEER, and 100 mW high power compared to upgrade a long pulse, which means less time for measurement.

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Brooke promises to provide clients with unparalleled throughout the buying cycle, from the initial consultation to the evaluation, installation, and service life of the instrument, it is LabScape always adhere to the service concept.

LabScape Maintenance agreement (Maintenance Agreements), the optional services (On - site On - Demand) and laboratory improvement plan (Enhance Your Lab) modern Lab is dedicated to provide you with a new method of Maintenance and service.

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