Alpha 2.0
Login Register
» Articles » PMID: 22003310

Comparison of Continuous Wave, Spin Echo, and Rapid Scan EPR of Irradiated Fused Quartz

Overview
Journal Radiat Meas
Specialty Radiology
Date 2011 Oct 18
PMID 22003310
Citations 20
Authors
Deborah G Mitchell
Richard W Quine
Mark Tseitlin
Virginia Meyer
Sandra S Eaton
Gareth R Eaton
Affiliations
Soon will be listed here.
Abstract

The E' defect in irradiated fused quartz has spin lattice relaxation times (T(1)) about 100 to 300 μs and spin-spin relaxation times (T(2)) up to about 200 μs, depending on the concentration of defects and other species in the sample. These long relaxation times make it difficult to record an unsaturated continuous wave (CW) electron paramagnetic resonance (EPR) signal that is free of passage effects. Signals measured at X-band (~9.5 GHz) by three EPR methods: conventional slow-scan field modulated EPR, rapid scan EPR, and pulsed EPR, were compared. To acquire spectra with comparable signal-to-noise, both pulsed and rapid scan EPR require less time than conventional CW EPR. Rapid scan spectroscopy does not require the high power amplifiers that are needed for pulsed EPR. The pulsed spectra, and rapid scan spectra obtained by deconvolution of the experimental data, are free of passage effects.

Citing Articles

Rapid-scan electron paramagnetic resonance using an EPR-on-a-Chip sensor.

Kunstner S, Chu A, Dinse K, Schnegg A, McPeak J, Naydenov B Magn Reson (Gott). 2023; 2(2):673-687.

PMID: 37905212 PMC: 10539758. DOI: 10.5194/mr-2-673-2021.

Cyclic Disulfide-Bridged Dinitroxide Biradical for Measuring Thiol Redox Status by Electron Paramagnetic Resonance.

Woodcock L, Legenzov E, Dirda N, Kao J, Eaton G, Eaton S J Phys Chem B. 2023; 127(41):8762-8768.

PMID: 37811968 PMC: 10990597. DOI: 10.1021/acs.jpcb.3c03387.

EPR Everywhere.

Biller J, McPeak J Appl Magn Reson. 2021; 52(8):1113-1139.

PMID: 33519097 PMC: 7826499. DOI: 10.1007/s00723-020-01304-z.

Nonresonant Transmission Line Probe for Sensitive Interferometric Electron Spin Resonance Detection.

Shrestha P, Abhyankar N, Anders M, Cheung K, Gougelet R, Ryan J Anal Chem. 2019; 91(17):11108-11115.

PMID: 31380627 PMC: 11090209. DOI: 10.1021/acs.analchem.9b01730.

Modular imaging system: Rapid scan EPR at 800 MHz.

Tseytlin O, Guggilapu P, Bobko A, AlAhmad H, Xu X, Epel B J Magn Reson. 2019; 305:94-103.

PMID: 31238278 PMC: 6656609. DOI: 10.1016/j.jmr.2019.06.003.

References
1.
Harbridge J, Rinard G, Quine R, Eaton S, Eaton G . Enhanced signal intensities obtained by out-of-phase rapid-passage EPR for samples with long electron spin relaxation times. J Magn Reson. 2002; 156(1):41-51. DOI: 10.1006/jmre.2002.2526. View
2.
Joshi J, Ballard J, Rinard G, Quine R, Eaton S, Eaton G . Rapid-scan EPR with triangular scans and fourier deconvolution to recover the slow-scan spectrum. J Magn Reson. 2005; 175(1):44-51. DOI: 10.1016/j.jmr.2005.03.013. View
3.
Tseitlin M, Rinard G, Quine R, Eaton S, Eaton G . Deconvolution of sinusoidal rapid EPR scans. J Magn Reson. 2010; 208(2):279-83. PMC: 3097533. DOI: 10.1016/j.jmr.2010.11.015. View
4.
Stoner J, Szymanski D, Eaton S, Quine R, Rinard G, Eaton G . Direct-detected rapid-scan EPR at 250 MHz. J Magn Reson. 2004; 170(1):127-35. DOI: 10.1016/j.jmr.2004.06.008. View
5.
Quine R, Czechowski T, Eaton G . A Linear Magnetic Field Scan Driver. Concepts Magn Reson Part B Magn Reson Eng. 2009; 35B(1):44-58. PMC: 2762224. DOI: 10.1002/cmr.b.20128. View