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数学
THEORETICAL CALCULATION OF LIGAND FIELD OF LASER CRYSTALS, Er~(3+): KGd (WO4_)_2 AND KEr (WO_4)_2
<正> I.THEORY The Hamiltonian of rare earth ions can be written as where (?)_(Coul) is the Coulomb interaction, (?)_(s·o), the spin-orbit interaction, (?)_(Ca), Casimir operator interaction in the interaction of different configurations in Coulomb interaction, and (?)_(cf) is ligand field interaction. A method to treat the rare earth ions is to diagonalize (?)_(Coul), (?)_(s.o) and (?)_(Ca), in (1) simultaneously and then to determine the eigenfunction of "intermediate
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Chinese Science Bulletin
1989年17期

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