Calculation of Polarizabilities and Shielding Factors
作者： A. Dalgarno , J. M. McNamee
DOI: 10.1063/1.1732090
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摘要: Measurements on CaF/sub 2):Tm IH are reported, and measurements Ca/F/ sub 2/:Yb lV included for comparison. The crystals were x irradiated at 77 deg K the ESR spectrum investigated without allowing to warm up. is assigned Tm/sup 169/ III which isoelectronic with Yb IV (4f/ sup 13/sup 2/F/sup 7/2/). This result shows that electrons captured by Tm ions must have been initially cubic sites. also observed after irradiation room temperature ionizing radiations do not begin decay rapidly until heated about 550 C. g value of was measured X bands in field 2/, it found = 3.443 plus or minus 0.002. ground configuration consists a single hole full 4f shell only two terms /sup 2/ F/sub 5/2/ 2/F 7/2/ occur, latter lower. Discussion given significance results. (P.C.H.)
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