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Dynamic nuclear polarization in electron spin echo |
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| Authors: | A G Maryasov |
| Institution: | (1) Department of Experimental Research, Malmö University Hospital, 205 02 Malmö, Sweden;(2) Amersham Health R&D AB, Medeon, 205 12 Malmö, Sweden;(3) Department of Diagnostic Radiology, Malmö University Hospital, 205 02 Malmö, Sweden;(4) Department of Diagnostic Radiology, Lund University Hospital, 221 85 Lund, Sweden;(5) Department of Medical Radiation Physics, Lund University Hospital, 221 85 Lund, Sweden |
| Abstract: | It is shown that under the action of a proper microwave pulse sequence the equilibrium polarization of the electron spin may be transferred dynamically to the longitudinal nuclear magnetization which will oscillate due to the nuclear spin precession around the effective fields relating to differnt electron quantum number manifolds. These oscillations may be measured directly in the radiofrequency band. Analytical formulae are obtained for the case when all the nuclei coupled to an unpaired electron have spins of 1/2. |
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