On the coloration properties of CaF2 : Na

Abstract

2014 We have investigated the dichroic properties and the existence of metastable excited states of several colour centres created by X-irradiation in CaF2 : Na. According to our results absorption bands peaking at 600, 385 and 322 nm are associated to the same centre which behaves optically as orthorhombic. The lack of observation of a metastable state is… (More)

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