A sensitivity leap for X-band EPR using a probehead with a cryogenic preamplifier.

Simenas M, O'Sullivan J, Zollitsch CW, Kennedy O, Seif-Eddine M, Ritsch I, Hülsmann M, Qi M, Godt A, Roessler MM, Jeschke G, et al. (2020)
Journal of magnetic resonance 322: 106876.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurden keine Dateien hochgeladen. Nur Publikationsnachweis!
Autor*in
Simenas, Mantas; O'Sullivan, James; Zollitsch, Christoph W; Kennedy, Oscar; Seif-Eddine, Maryam; Ritsch, Irina; Hülsmann, MiriamUniBi; Qi, Mian; Godt, AdelheidUniBi; Roessler, Maxie M; Jeschke, Gunnar; Morton, John J L
Alle
Abstract / Bemerkung
Inspired by the considerable success of cryogenically cooled NMR cryoprobes, we present an upgraded X-band EPR probehead, equipped with a cryogenic low-noise preamplifier. Our setup suppresses source noise, can handle the high microwave powers typical in X-band pulsed EPR, and is compatible with the convenient resonator coupling and sample access found on commercially available spectrometers. Our approach allows standard pulsed and continuous-wave EPR experiments to be performed at X-band frequency with significantly increased sensitivity compared to the unmodified setup. The probehead demonstrates a voltage signal-to-noise ratio (SNR) enhancement by a factor close to 8* at a temperature of 6K, and remains close to 2* at room temperature. By further suppressing room-temperature noise at the expense of reduced microwave power (and thus minimum pi-pulse length), the factor of SNR improvement approaches 15 at 6K, corresponding to an impressive 200-fold reduction in EPR measurement time. We reveal the full potential of this probehead by demonstrating such SNR improvements using a suite of typical hyperfine and dipolar spectroscopy experiments on exemplary samples. Copyright © 2020 Elsevier Inc. All rights reserved.
Erscheinungsjahr
2020
Zeitschriftentitel
Journal of magnetic resonance
Band
322
Art.-Nr.
106876
eISSN
1096-0856
Page URI
https://pub.uni-bielefeld.de/record/2949437

Zitieren

Simenas M, O'Sullivan J, Zollitsch CW, et al. A sensitivity leap for X-band EPR using a probehead with a cryogenic preamplifier. Journal of magnetic resonance. 2020;322: 106876.
Simenas, M., O'Sullivan, J., Zollitsch, C. W., Kennedy, O., Seif-Eddine, M., Ritsch, I., Hülsmann, M., et al. (2020). A sensitivity leap for X-band EPR using a probehead with a cryogenic preamplifier. Journal of magnetic resonance, 322, 106876. doi:10.1016/j.jmr.2020.106876
Simenas, M., O'Sullivan, J., Zollitsch, C. W., Kennedy, O., Seif-Eddine, M., Ritsch, I., Hülsmann, M., Qi, M., Godt, A., Roessler, M. M., et al. (2020). A sensitivity leap for X-band EPR using a probehead with a cryogenic preamplifier. Journal of magnetic resonance 322:106876.
Simenas, M., et al., 2020. A sensitivity leap for X-band EPR using a probehead with a cryogenic preamplifier. Journal of magnetic resonance, 322: 106876.
M. Simenas, et al., “A sensitivity leap for X-band EPR using a probehead with a cryogenic preamplifier.”, Journal of magnetic resonance, vol. 322, 2020, : 106876.
Simenas, M., O'Sullivan, J., Zollitsch, C.W., Kennedy, O., Seif-Eddine, M., Ritsch, I., Hülsmann, M., Qi, M., Godt, A., Roessler, M.M., Jeschke, G., Morton, J.J.L.: A sensitivity leap for X-band EPR using a probehead with a cryogenic preamplifier. Journal of magnetic resonance. 322, : 106876 (2020).
Simenas, Mantas, O'Sullivan, James, Zollitsch, Christoph W, Kennedy, Oscar, Seif-Eddine, Maryam, Ritsch, Irina, Hülsmann, Miriam, Qi, Mian, Godt, Adelheid, Roessler, Maxie M, Jeschke, Gunnar, and Morton, John J L. “A sensitivity leap for X-band EPR using a probehead with a cryogenic preamplifier.”. Journal of magnetic resonance 322 (2020): 106876.

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 33264732
PubMed | Europe PMC

Suchen in

Google Scholar