Abstract
We have been pursuing the spectroscopic properties of actinide ions in silicate matrices. One facet of these studies involves the behavior of Stokes and anti-Stokes emissions exhibited by Am3+ in these hosts. Several attributes have been found to influence the spectral profile, which include excitation wavelength, laser power, and dopant-concentration. Excitation with the 514.5 nm (19435 cm-1) line of argon laser provides anti-Stokes emissions at 21100 and ˜19920 em−1 in the boro-silicate matrices. This up-conversion was found to proceed through a multi-photon scheme, and the efficiency increases with increased dopant concentration. Based on our concentration-dependent studies, the up-conversion is suggested to involve a cross-relaxation process [(5D1′, 7F0′) (7F6, 7F2′)] between neighboring americium ions. © 2002 Atomic Energy Society of Japan.
| Original language | English |
|---|---|
| Pages (from-to) | 132-135 |
| Number of pages | 4 |
| Journal | Journal of Nuclear Science and Technology |
| Volume | 39 |
| Issue number | Issue |
| DOIs | |
| State | Published - Jan 1 2002 |
Keywords
- Americium
- Concentration-dependent
- Emission
- Spectroscopy
- Up-conversion
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