About 100 millisecond (ms) pulsars have been identified in the Galaxy, and only ≈ 10% of them are solitary, i.e. without a binary companion. Nothing is known on the optical emission properties of millisecond pulsars. Observations of solitary millisecond pulsars are the only way to detect their faint optical radiation, otherwise buried by the brighter white dwarf companion. As in the case of sol...

Halide perovskites have been considered as nuclear radiation detection materials due to their high mobility, long carrier lifetime, and absorption coefficient. However, it has reported th...

Due to some of their unique properties, optical fiber dosimeters are attractive and extensively researched devices in several radiation-related areas. This work evaluates the performance and potential of commercial perfluorinated polymer optical fibers (PF-POFs) for radiation monitoring applications. Gamma radiation-induced attenuation (RIA) of two commercial PF-POFs is evaluated in the VIS spe...

Wavelength-division multiplexed fiber-optic links could find applications in various radiation environments. Space industry, for example, could benefit from radiation-tolerant high-speed optical links for the next generation of observation satellites. For application in the nuclear energy industry, the use of passive optical devices also needs to be evaluated at high dose rates and total doses....

Fibre optic radiation monitors have promising applications in the nuclear industry. We investigate the possible use of PMMA plastic optical fibres as on-line dosimeters, based on the measurement of the attenuation induced by the ionising gamma radiation. A novel interrogation scheme is proposed for real-time dosimetry applications. This technique involves using spectral measurement techniques w...

background: radiation shielding properties is an important for a material wish can be used the photon attenuation coefficients of clay produced using different rate of boron have been measured for the purpose of radioactive waste disposal. materials and methods: the measurement has been performed using gamma spectrometer contains nai (tl) detector at the photon energies of 662, 1173 and 1332 ke...

Ultrasound-modulated optical tomography (UOT) detects ultrasonically modulated light to spatially localize multiply scattered photons in turbid media with the ultimate goal of imaging the optical properties in living subjects. A principal challenge of the technique is weak modulated signal strength. We discuss ways to push the limits of signal enhancement with intense acoustic bursts while conf...

Atomic distribution in phosphors for neutron detection has not been fully elucidated, although their ionization efficiency is strongly dependent on the state of the rare earth in the matrix. In this work, we examine optical properties of Eu-doped 80LiF-20CaF2 eutectics for neutron detector applications based on the Eu distribution. At low concentrations, aggregation of Eu cations is observed, w...

This study analyses the thermally stimulated luminescence or thermoluminescence (TL) glow curve between 300 and 773 K of germanium-doped silica optical fibre. A main glow peak at 530 K with a characteristic spectral emission centred at 400 nm is found. Both features are particularly suitable for dosimetry. Thus, an investigation by the TL technique of some first clinically relevant features of ...