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Books > Science & Mathematics > Physics > Applied physics & special topics > Biophysics
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Quantitative EPR (Paperback, 2010 ed.)
Loot Price: R2,859
Discovery Miles 28 590
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Quantitative EPR (Paperback, 2010 ed.)
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There is a growing need in both industrial and academic research to
obtain accurate quantitative results from continuous wave (CW)
electron paramagnetic resonance (EPR) experiments. This book
describes various sample-related, instrument-related and
software-related aspects of obtaining quantitative results from EPR
expe- ments. Some speci?c items to be discussed include: selection
of a reference standard, resonator considerations (Q, B ,B ), power
saturation, sample position- 1 m ing, and ?nally, the blending of
all the factors together to provide a calculation model for
obtaining an accurate spin concentration of a sample. This book
might, at ?rst glance, appear to be a step back from some of the
more advanced pulsed methods discussed in recent EPR texts, but
actually quantitative "routine CW EPR" is a challenging technique,
and requires a thorough understa- ing of the spectrometer and the
spin system. Quantitation of CW EPR can be subdivided into two main
categories: (1) intensity and (2) magnetic ?eld/mic- wave frequency
measurement. Intensity is important for spin counting. Both re-
tive intensity quantitation of EPR samples and their absolute spin
concentration of samples are often of interest. This information is
important for kinetics, mechanism elucidation, and commercial
applications where EPR serves as a detection system for free
radicals produced in an industrial process. It is also important
for the study of magnetic properties. Magnetic ?eld/microwave
frequency is important for g and nuclear hyper?ne coupling
measurements that re?ect the electronic structure of the radicals
or metal ions.
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