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Direct observation of chemically induced dynamic nuclear polarization in low magnetic fields

✍ Scribed by R.Z. Sagdeev; Yu.A. Grishin; A.B. Dushkin

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
242 KB
Volume
46
Category
Article
ISSN
0009-2614

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✦ Synopsis

CJDNP cffccts durmg bcnzoyl peroxide thermolysis have been measured duectly by a pulsed NMR spectrometer in Jaw magnetic fields (OS-120 Oe). It IF shown tilat the traditional technique of the sample "transfer" distorts the real magnetic ticld dcpendsncc of CJDNP.

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## Abstract Further development of the diffusional model of the radical pair is suggested. A function is proposed for the exponential distribution of the diffusional trajectories of the radicals in a radical pair. By this function, the differences in the populations of nuclear spin levels in the mo

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Dynamic nuclear polarization (DNP) is presented as an applicaformed with insoluble (16) or soluble free radicals (5,6), tion for EPR spectroscopy in low magnetic field (below 40 G). but the most widely used free radicals are nitroxides dis-An updated theory of DNP allows the calculation of the maxim