In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: 99 Tc (surrogated by Re) was immobilized in an iron phosphate glass. $1.1 mass% Re was retained, possibly dissolved, in the ...

Sodium borosilicate glasses containing various concentrations of rhenium or technetium were fabricated, and their vibrational spectra studied using a Raman microscope. Spectra were interpreted with reference to new high resolution measurements of alkali pertechnetates and perrhenates NaReO4, KReO4, NaTcO4, and KTcO4. At low concentrations of ReO4 or TcO4 , glass spectra show weak peaks superimp...

Developments in the field of glass research necessitate mimicking optical properties materials before melting raw materials, as they are very expensive nowadays. An artificial neural network (ANN) was utilized during this work to train and predict Judd–Ofelt parameters various glasses, such ?2, ?4 ?6, radiative lifetimes many different types rare-earth-doped glasses. The optimized ANN architect...