Tungsten gallium-phosphate glasses as promising intrinsic scintillators
Source abstract
Abstract
Tungsten gallium-phosphate glasses with composition NaPO 3-20Ga 2O 3-xNa 2WO 4 (x = 0, 1, 3, 5 and 10% mol) were synthesized by the melt-quenching technique with high chemical stability and excellent optical properties, and evaluated as potential intrinsic glass scintillators. Fourier-transform infrared measurements showed a decrease in the amount of OH - groups for increasing Na 2WO 4 contents, while X-ray photoelectron spectroscopy revealed the presence of sole W 6+ species. Optical transmission measurements showed a high level of transmittance (∼90%) over a broad spectral range (400 to 2500 nm). Luminescence was found to correspond to a broad emission characteristic of the WO 4 2− complex that can be excited by ultraviolet and X-rays with average lifetimes ranging from 32 to 20 μs. At cryogenic temperatures, the NaPGaW glasses showed a significant increase in the luminescence emission.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Glass properties and applications · Radiation Detection and Scintillator Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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