Abstract Alexandrite mineral (BeAl 2 O 4: Cr 3+) powder incorporated in a fluorinated
polymer was prepared in the form of pellets. A mixture with 20 wt% of the alexandrite in the …

Abstract Alexandrite (BeAl 2 O 4: Cr 3+) is a variety of the chrysoberyl mineral widely found
in Brazil. This mineral is expected to have potential as a natural dosimeter since its …

Analyses of thermoluminescence (TL) and thermally stimulated exoelectron emission have
proved that the natural Brazilian topaz is a promising material for dosimetry of ionizing …

We studied the optical absorption and luminescence of agate (SiO 2), topaz (Al 2 [SiO 4](F,
OH) 2), beryl (Be 3 Al 2 Si 6 O 18), and prehnite (Ca 2 Al (AlSi 3 O 10)(OH) 2) doped with …

The possibility of using different materials for thermoluminescent dosimetry agglutinating
their powder with Teflon®(a polymer) has been studied in recent years. In this paper the …

In the present work, electron paramagnetic resonance (EPR) spectra and
thermoluminescence (TL) emission of colourless natural topaz from Santo Antônio do …

The thermoluminescent properties of composites containing powdered topaz embedded in
Teflon or glass were studied and compared with the corresponding properties of the well …

Albeit the thermoluminescent properties of both Al 2 O 3 and natural topaz have been
documented, owing to a controlled composition, the prospective of synthetic topaz for …

Natural colourless Brazilian topaz was combined with commercial silica glass to produce
composites of topaz–glass for application in dosimetry. The preparation of the composites …

O amplo uso das radiações ionizantes na medicina e na indústria, associado aos riscos
conhecidos que esse tipo de radiação pode provocar, tem motivado o desenvolvimento de …