Digitale Medien
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
82 (1985), S. 1102-1111
ISSN:
1089-7690
Quelle:
AIP Digital Archive
Thema:
Physik
,
Chemie und Pharmazie
Notizen:
Optical excitation and emission spectra are reported for the Cs2NaErCl6 system under variable-temperature (8.5–298 K) conditions. Detailed line assignments are made for the 4I15/2←4S3/2 and 4I15/2←4F9/2 high-resolution emission spectra, and all five crystal-field levels split out of the 4I15/2 ground multiplet are located. These results combined with our previously reported absorption results provide the locations of 35 crystal-field levels spanning 11 multiplets of the Er3+ ion in Cs2NaErCl6. Energy level calculations based on a nine-parameter 4f-electron Hamiltonian operating within the 4f11 configuration of Er3+ give results in good agreement with experiment. Excitation spectra for 4I15/2←4S3/2 emission are reported at several temperatures over the 340–540 nm spectral region. Emission spectra excited by near-ultraviolet radiation (centered at 383 nm) are reported over the 405–725 nm spectral region for sample temperatures ranging from 8.5 to 298 K. All but one of the seven multiplet-to-multiplet emission bands observed in this region decrease in intensity as the sample temperature is increased. The 4I13/2←4G11/2 emission exhibits an increase in intensity with increasing temperature.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.448482
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