Vibronic transitions in rare earth spectroscopy

摘要: Abstract An overview of the studies vibronic transitions in rare earth ions is given with special attention to intraconfigurational transitions. First general theory shortly reviewed, later that rare-earth The spectroscopy Gd3+ extensively dealt with, because it an ideal ion for this type study due its non-degenerate ground state. Vibronic coupling several vibrational modes has been observed, also which central not directly involved. Attention Eu3+ and Pr3+and some other specific cases interest. use as a probe pointed out. A comparison relating physical phenomena made. experimental results are compared theoretical expressions derived up till now. agreement satisfactory, although qualitative nature. concentration dependence intensity well understood. role opposite-parity configurations probably...