Journal
JOURNAL OF MAGNETIC RESONANCE
Volume 205, Issue 1, Pages 109-113Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jmr.2010.04.006
Keywords
EPR standard; Irradiated silicon dioxide; Pulsed EPR
Funding
- NIH NIBIB [EB002807, EB000557]
- NSF IDBR [0753018]
- Bruker BioSpin
- Div Of Biological Infrastructure
- Direct For Biological Sciences [0753018] Funding Source: National Science Foundation
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A 2 mm diameter by 10 mm long cylinder of fused SiO(2) (quartz) gamma-irradiated to 1 kGy with (60)Co contains about 2 x 10(16) spins/cm(3). It is proposed as a standard for monitoring signal-to-noise (S/N) performance of X-band pulsed EPR spectrometers. This sample yields S/N of about 25 on modern spin echo spectrometers, which permits measurement of both signal and noise under the same conditions with an 8-bit digitizer. (C) 2010 Elsevier Inc. All rights reserved.
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