Spontaneous Emission Probabilities and Quantum Efficiencies for Excited States of Pr3+ in LaF3

• M. J. Weber

  Raytheon Research Division, Waltham, Massachusetts

抄録

Spontaneous emission probabilities for electric- and magnetic-dipole transitions from several electronic states of Pr3+ in LaF3 are calculated using the Judd–Ofelt theory and experimental intensity parameters. The calculated radiative decay probabilities are combined with observed fluorescence lifetimes to determine the quantum efficiencies of the D21 and P03 states. Although the lifetimes were measured at low temperatures and small Pr concentrations where competing nonradiative decay by multiphonon emission and ion-pair relaxation should be negligible, the predicted quantum efficiencies are less than unity. The radiative lifetimes obtained via the Einstein relations and measured integrated absorption and relative fluorescence intensities agree, however, with the observed lifetimes. The discrepancies appear to arise from approximations and possible limitations inherent in the approach used to calculate the radiative transition probabilities. Matrix elements of U(λ) for states of 4f2 in intermediate coupling are included in an appendix.

収録刊行物

• The Journal of Chemical Physics

  The Journal of Chemical Physics 48 (10), 4774-4780, 1968-05-15

  AIP Publishing

キーワード

• Physical and Theoretical Chemistry
• General Physics and Astronomy

詳細情報

• CRID: 1360574095749179392
• NII論文ID: 30015690586
• DOI: 10.1063/1.1668061
• ISSN: 10897690
• ISSN: 00219606
• Web Site: https://pubs.aip.org/aip/jcp/article-pdf/48/10/4774/18857140/4774_1_online.pdf
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