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- W1998045981 abstract "The radiation damage processes in pure and impurity-doped RbMgF3 crystals are studied by identifying and monitoring the radiation induced defects. Interstitials and Vk centers are observed at low temperatures. One of the most important characteristics of RbMgF3 is that the F centers form in this host without their aggregation even at room temperature. Annealing of these samples at higher temperature after room temperature irradiation however forms F-center aggregates such as F2-centers and F3-centers and also impurity-F center pairs. In the case of impurities such as Er3+ or Mn2+ which substitutionally replace Mg2+ ions in the RbMgF3 lattice, there is no effect on the early stage production of F centers. It is observed that the statistical productions of the F aggregates and Mn2+-F pairs occur during room temperature irradiation. On the other hand, the larger Eu2+ or Cu2+ ions substitute for Rb+ ions in this host and significant enhancement of the early stage formation of F centers at room temperature is observed. The experimental observations are compared with the proposed model on radiation defect production. Die Strahlenschädigungsprozesse in reinen und storstellendotierten RbMgF3-Kristallen werden durch Identifikation und Verfolgung der strahlungsinduzierten Defekte untersucht. Bei niedrigen Temperaturen werden Interstitials und Vk-Zentren beobachtet. Eine der wesentlichsten Charakteristiken von RbMgF3 ist, daß sich die F-Zentren in dieser Wirtssubstanz ohne Aggregation sogar bei Zimmertemperatur bilden. Das Ausheilen dieser Proben bei höheren Temperaturen nach Zimmertemperaturbestrahlung bildet jedoch F-Zentrenaggregate wie F2-Zentren und F3-Zentren und auch Störstellen-F-Zentrenpaare. Im Falle von Störstellen, wie Er3+ oder Mn2+, die substitutionell Mg2+ -Ionen im RbMgF3-Gitter ersetzen, existiert kein Einfluß auf die Produktion von F-Zentren im frühen Stadium. Es wird beobachtet, daß die statistische Produktion von F-Zentrenaggregaten und Mn2+ -F-Paare während Raumtemperaturbestrahlung auftritt. Auf der anderen Seite substituieren die größeren Eu2+ - und Cu2+ -Ionen Rb+ -Ionen in dieser Wirtssubstanz und es wird eine beträchtliche Erhöhung der F-Zentrenbildung in frühem Stadium bei Zimmertemperatur beobachtet. Die experimentellen Beobachtungen werden mit dem vorgeschlagenen Modell der Strahlungsdefektproduktion verglichen." @default.
- W1998045981 created "2016-06-24" @default.
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- W1998045981 date "1992-05-01" @default.
- W1998045981 modified "2023-09-30" @default.
- W1998045981 title "Electron Irradiation Damage in Pure and Impurity-Doped RbMgF3 Crystals" @default.
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- W1998045981 doi "https://doi.org/10.1002/pssb.2221710105" @default.
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