Karabulut, Y.Canimoglu, A.2019-08-012019-08-0120140038-70101532-2289https://dx.doi.org/10.1080/00387010.2013.808231https://hdl.handle.net/11480/4149In this study, cathodoluminescence (CL) spectroscopy at direct current and alternating current under the sample temperature condition of 40-293K using different modulation frequencies is presented for alkali feldspar from the Dartmoor granite (UK). These feldspars contain strain-controlled lamellar crypto- and microperthites that are cross-cut by strain-free deuteric microperthites. The CL spectra of the alkali feldspar at room and low temperature confirm that the observed emission peaked at similar to 460nm could be associated with Al-O--Al or Ti impurity centers, yellow emission similar to 560nm could be associated with the presence of the centers such as radiation-induced defect centers, and similar to 756nm emission could be associated with the Fe3+ impurity center on T-1 and T-2 sites. The consequence of their association is to produce different luminescence properties such as intensity, peak wavelength, and band shape.eninfo:eu-repo/semantics/closedAccessCathodoluminescenceMn2+FeldsparsFe3+Article47645846410.1080/00387010.2013.8082312-s2.0-84897511117Q3WOS:000334070800006Q4