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Since the 5d-electrons involved in the cerium transition couple more strongly to lattice phonons than the well shielded f-electrons of the excited state of europium, broad bands rather than narrow lines are observed in the luminescence and the luminescence excitation spectrum of cerium.![]() ![]() ![]() [ Last edited by ÔÆÒÝÅô on 2012-10-21 at 15:59 ] |
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