CATHODOLUMINESCENCE AND LASER-EXCITED LUMINESCENCE SPECTROSCOPY OF EU3+ AND EU2+ IN SYNTHETIC CAF2: A COMPARATIVE STUDY
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dc.contributor.author | Barbin V. | |
dc.contributor.author | Jouart J.P. | |
dc.contributor.author | Dalmeida T. | |
dc.date.accessioned | 2020-11-20T10:52:42Z | |
dc.date.available | 2020-11-20T10:52:42Z | |
dc.date.issued | 1996 | |
dc.identifier | https://elibrary.ru/item.asp?id=431515 | |
dc.identifier.citation | Chemical Geology, 1996, , 1, 77-86 | |
dc.identifier.issn | 0009-2541 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/19160 | |
dc.description.abstract | A comparative study of laser-excited luminescence and cathodoluminescence of CaF2:0.1 % EuF3 at room temperature was performed to determine the position and relative intensity of Eu3+ and Eu2+ main emission lines in CaF2. Cathodoluminescence spectra show a major peak at 424 nm which is related to the electric dipole allowed 4f65d-4f7 transition of the Eu2+ ion. The cathodoluminescence peaks of the Eu3+ ion are very weak and are not easily identifiable. Photoluminescence spectra recorded under different laser excitation conditions (corresponding to the 7F0 →a- 5D0 transition of the Eu3+ ion) reveal major peaks around 590 nm due to the magnetic dipole allowed 7F0 → 5D1 transition of the Eu3+ ion in three different environments: tetragonal, dimer and cubic. We emphasize the necessity of using a tunable laser to unambiguously identify the Eu3+ ions in the minerals. | |
dc.title | CATHODOLUMINESCENCE AND LASER-EXCITED LUMINESCENCE SPECTROSCOPY OF EU3+ AND EU2+ IN SYNTHETIC CAF2: A COMPARATIVE STUDY | |
dc.type | Статья |
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