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 ...

An optical guide, which is a light guide located between NaI(Tl) scintillation-crystal and array of photo-multiplier tubes (PMTs) in the gamma camera detector system, is an essential component to deliver the spatial information recorded in scintillator to the PMTs. Without the optical guide, the spatial information within the range of a single PMT could not be obtained. For the design of the op...

In various fields of radiation and nuclear physics, research its applications help in the management control human activities, especially analysis waste measurement low activity environmental samples. The current study uses a hybrid analytical technique 152 Eu lateral hexagonal radioactive source to calibrate standard cylindrical NaI(Tl) γ-ray scintillation detector. is combination experimental...

Abstract Highly radiopure NaI(Tl) was developed to search for particle candidates of dark matter. Optimized methods were combined reduce various radioactive impurities. $^{40}$K effectively reduced by the recrystallization method. The progenies decay chains uranium and thorium appropriate resins. concentration natural potassium in crystal 20 ppb. Concentrations alpha-ray emitters successfully r...

This paper describes the liquid scintillator veto system for COSINE-100 dark matter experiment and its performance. The detector consists of eight NaI(Tl) crystals immersed in 2200~L linear alkylbenzene-based scintillator. tags between 65 75\% internal $^{40}$K background 2--6 keV energy region. We also describe model scintillator, which is primarily used to assess calibration threshold.

Abstract The JRC applied six measurement techniques to standardise the activity of an 241 Am solution in frame 2003 key comparison CCRI(II)-K2.Am-241. methods used were alpha-particle counting at a defined small solid angle, high-efficiency particle and photon with windowless 4π CsI(Tl) sandwich spectrometer, alpha pressurised proportional counter, alpha-gamma coincidence sum counter NaI(Tl) we...

The application of ionizing radiations in different fields requires the use of equipment capable of detecting their presence or quantifying them. Detectors of the most different shapes, composition and characteristics are required to cover the full range of application of ionizing radiations. At present, thermoluminescent detectors (TLD) are the most widely employed for individual gamma monitor...

Inorganic scintillation detectors are widely used to measure of dose rate in the environment due their high sensitivity photon radiation. A distinctive feature when using such is need take into account position effective energy release center. This peculiarity actual measuring instruments with inorganic as working standards during calibration at short “source – detector” distances conditions lo...