Spectral investigation of Tm3+ in thulium nitrate has been carried out. For the first time, the second derivative spectrum of this complex has been recorded. The results of a least squares fit of the energy levels and oscillator strengths of the bands are reported in terms of interaction parameters and Judd-Ofelt parameters. Radiative transition probabilities for fluorescence levels3P0,1I6,1D2 and1G4 of Tm3+ in thulium nitrate are estimated.
Volume 134, 2022
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