Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 479-485 |
| Seitenumfang | 7 |
| Fachzeitschrift | Journal of Nuclear Materials |
| Jahrgang | 433 |
| Ausgabenummer | 1-3 |
| Publikationsstatus | Veröffentlicht - Feb. 2013 |
Abstract
Time-resolved laser fluorescence spectroscopy (TRLFS) was used to probe the local environment of Eu3+ and Cm3+ doped into La 2Zr2O7 in both the defect fluorite and pyrochlore structures. It is evident that each structure has a dominant environment for the trivalent dopant ion. This makes it possible to characterize the fluorescence emission spectrum and lifetime for each Eu3+ and Cm3+ species. This data can be used for a relative quantification of the Eu3+ or Cm3+ in each local environment. This technique has application to verifying single phase material and probing radiation damage, and has been shown to be more sensitive than the current evaluation method of X-ray diffraction. The defect fluorite structure has a poorly defined site due to random oxygen vacancies and a short fluorescence lifetime, while the pyrochlore structure has a well defined emission and long fluorescence lifetime. The Cm3+ fluorescence from the pyrochlore structure was found to have a greater bathochromic shift (red shift) and larger ground state splitting of the 8S7/2 than previously reported in any system.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Kern- und Hochenergiephysik
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Energie (insg.)
- Kernenergie und Kernkraftwerkstechnik
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in: Journal of Nuclear Materials, Jahrgang 433, Nr. 1-3, 02.2013, S. 479-485.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - TRLFS of Eu3+ and Cm3+ doped La2Zr 2O7
T2 - A comparison of defect fluorite to pyrochlore structures
AU - Holliday, Kiel S.
AU - Finkeldei, Sarah
AU - Neumeier, Stefan
AU - Walther, Clemens
AU - Bosbach, Dirk
AU - Stumpf, Thorsten
PY - 2013/2
Y1 - 2013/2
N2 - Time-resolved laser fluorescence spectroscopy (TRLFS) was used to probe the local environment of Eu3+ and Cm3+ doped into La 2Zr2O7 in both the defect fluorite and pyrochlore structures. It is evident that each structure has a dominant environment for the trivalent dopant ion. This makes it possible to characterize the fluorescence emission spectrum and lifetime for each Eu3+ and Cm3+ species. This data can be used for a relative quantification of the Eu3+ or Cm3+ in each local environment. This technique has application to verifying single phase material and probing radiation damage, and has been shown to be more sensitive than the current evaluation method of X-ray diffraction. The defect fluorite structure has a poorly defined site due to random oxygen vacancies and a short fluorescence lifetime, while the pyrochlore structure has a well defined emission and long fluorescence lifetime. The Cm3+ fluorescence from the pyrochlore structure was found to have a greater bathochromic shift (red shift) and larger ground state splitting of the 8S7/2 than previously reported in any system.
AB - Time-resolved laser fluorescence spectroscopy (TRLFS) was used to probe the local environment of Eu3+ and Cm3+ doped into La 2Zr2O7 in both the defect fluorite and pyrochlore structures. It is evident that each structure has a dominant environment for the trivalent dopant ion. This makes it possible to characterize the fluorescence emission spectrum and lifetime for each Eu3+ and Cm3+ species. This data can be used for a relative quantification of the Eu3+ or Cm3+ in each local environment. This technique has application to verifying single phase material and probing radiation damage, and has been shown to be more sensitive than the current evaluation method of X-ray diffraction. The defect fluorite structure has a poorly defined site due to random oxygen vacancies and a short fluorescence lifetime, while the pyrochlore structure has a well defined emission and long fluorescence lifetime. The Cm3+ fluorescence from the pyrochlore structure was found to have a greater bathochromic shift (red shift) and larger ground state splitting of the 8S7/2 than previously reported in any system.
UR - http://www.scopus.com/inward/record.url?scp=84870156663&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2012.10.028
DO - 10.1016/j.jnucmat.2012.10.028
M3 - Article
AN - SCOPUS:84870156663
VL - 433
SP - 479
EP - 485
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - 1-3
ER -