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Published September 15, 1963 | public
Journal Article Open

Electronic shielding of the crystalline field in thulium ethyl sulfate

Abstract

The method of recoilless nuclear resonance absorption of gamma radiation was employed in investigating the temperature dependence of the nuclear quadrupole interaction in the 8.4-keV level of Tm169 in thulium ethyl sulfate, Tm(C2H5SO4)3•9H2O. The experiment reveals a strong influence of electronic shielding resulting from the polarization induced in the closed electron shells by the crystalline electric field.

Additional Information

©1963 The American Physical Society. Received 7 August 1963. The authors would like to thank Professor F.H. Spedding for making available the samples of thulium ethyl sulfate. It is a pleasure to acknowledge stimulating discussions with Professor R. Orbach, Dr. E.Y. Wong, and Dr. D.A. Shirley. Work supported by the U.S. Atomic Energy Commission.

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August 21, 2023
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October 16, 2023