Super high q cavity er 4122shqe

Manufactured by Oxford Instruments

The 'Super High Q' cavity (ER 4122SHQE) is a high-performance laboratory equipment designed for specialized applications. It features a high-quality factor (Q-factor) which enables efficient energy storage and low-loss performance. The core function of this cavity is to provide a highly resonant environment for various experimental and analytical purposes, without making claims about its intended use.

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Lab products found in correlation

Esr900 helium, by Oxford Instruments (2 mentions) E500 580 epr spectrometer, by Bruker (2 mentions) Esr900 helium flow cryostat, by Oxford Instruments (1 mentions) 4 mm quartz tubes, by Wilmad (1 mentions)

3 protocols using super high q cavity er 4122shqe

X-band EPR and ENDOR Spectroscopy

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EPR and ENDOR spectra were obtained using a Bruker E500/580 EPR spectrometer. Continuous wave X-band EPR spectra employed a Bruker “Super High Q” cavity (ER 4122SHQE) coupled to an Oxford Instruments ESR900 helium flow cryostat for temperature control. Spectra were acquired at 20 K using 10-microwatt microwave power, 100-kHz field modulation frequency, and 1 G modulation amplitude. X-band FID-detected Davies pulsed ENDOR spectra were collected at 30 K and g = 2.0033 using a Bruker EN 4118X-MD4 dielectric ENDOR resonator coupled to an ER 4118HV-CF100 Cryo-Free cooling system. The length of the initial inversion pulse was 400 ns, the detection pulse was 200 ns, and the radiofrequency pulse was 9 μs.

Bailey S.S., Payne K.A., Fisher K., Marshall S.A., Cliff M.J., Spiess R., Parker D.A., Rigby S.E, & Leys D. (2017). The role of conserved residues in Fdc decarboxylase in prenylated flavin mononucleotide oxidative maturation, cofactor isomerization, and catalysis. The Journal of Biological Chemistry, 293(7), 2272-2287.

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Continuous-wave X-band EPR Spectroscopy

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Continuous-wave X-band (∼9.4
GHz) EPR spectra were recorded with a Bruker E500/580 EPR spectrometer
with a Bruker “Super High Q” cavity (ER 4122SHQE) coupled
to an Oxford Instruments ESR900 helium flow cryostat for temperature
control. Spectra were collected at 20 K using 10 μW microwave
power, 100 kHz field modulation frequency, and 1 G modulation amplitude.

Payne K.A., Marshall S.A., Fisher K., Rigby S.E., Cliff M.J., Spiess R., Cannas D.M., Larrosa I., Hay S, & Leys D. (2021). Structure and Mechanism of Pseudomonas aeruginosa PA0254/HudA, a prFMN-Dependent Pyrrole-2-carboxylic Acid Decarboxylase Linked to Virulence. ACS Catalysis, 11(5), 2865-2878.

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EPR Spectroscopy of Cryogenic Samples

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EPR spectra were obtained using a Bruker E500/580 EPR spectrometer. Continuous wave X-band (~9.4 GHz) EPR spectra employed a Bruker “Super High Q” cavity (ER 4122SHQE) coupled to an Oxford Instruments ESR900 helium flow cryostat for temperature control. Spectra were acquired at 20 K using 10-microwatt microwave power, 100-kHz field modulation frequency, and 1 -G modulation amplitude. Samples were stored as 300 µL aliquots in 4 -mm quartz tubes (Wilmad) prior to recording spectra.

Marshall S.A., Payne K.A., Fisher K., White M.D., Ní Cheallaigh A., Balaikaite A., Rigby S.E, & Leys D. (2019). The UbiX flavin prenyltransferase reaction mechanism resembles class I terpene cyclase chemistry. Nature Communications, 10, 2357.

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