A Theoretical Study on Generation of Microwave Raman and Its Application to New ENDOR Using a Rectangular Waveguide:a Reflection Type

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It is well known that strong forbidden ESR transitions can be observed in someparamagnetic ions with large hyperfine (hf ) constants at ,v-band ESR. This indicates astrong mixing of different nuclear spin states into the electron spin wavefunctions,from which simultaneous NMR and ESR transitions are ex?*ected to generate a timedependent change in the magnetic polarization of the ions and induce new coherentmicrowave Raman signals. It is shown that analogous solutions to the approximateones for the density matrixes for the optical-NMR can be used in the microwaveRaman in a three level ESR-NMR system. And as an application of the Raman,numerical calculations on ENDOR signals reproduced by mixing the Raman and thereflected exciting microwave are performed on Eu" ions in alkaline earth fluoridesplaced at the closed end of tlte waveguide under some assumptions, and a possibilityof our new ENDOR method is discussed.
社団法人日本物理学会の論文
1987-09-15