Abstract We have studied the scintillation of pure and doped sodium iodide crystals handled in low humidity conditions under external α γ excitation from room temperature down to 4 K. The light yield was seen increase at temperatures by a factor 30 compared temperature, up maximum 40 photons/keV 60 K, stabilizing lower temperatures. Thallium fluctuates 20% around value, temperature. α/γ quenchi...

The effect of a random phase diffuser on fluctuations of laser light (scintillations) is studied. Not only spatial but also temporal phase variations introduced by the phase diffuser are analyzed. The explicit dependence of the scintillation index on finite-time phase variations is obtained for long propagation paths. It is shown that for large amplitudes of phase fluctuations, a finite-time ef...

Gamma cameras based on charge-coupled devices (CCDs) coupled to continuous scintillation crystals can combine a good detection efficiency with high spatial resolutions with the aid of advanced scintillation detection algorithms. A previously developed analytical multi-scale algorithm (MSA) models the depth-dependent light distribution but does not take statistics into account. Here we present a...

A scintillating bolometer based on a large cubic Li$_{2}$$^{100}$MoO$_4$ crystal (45 mm side) and Ge wafer (scintillation detector) has been operated in the CROSS cryogenic facility at Canfranc underground laboratory Spain. The dual-readout detector is prototype of technology that will be used next-generation $0\nu2\beta$ experiment CUPID. measurements were performed 18 12 mK temperature pulse ...

Gamma-ray detectors based on bright monolithic scintillation crystals coupled to pixelated photodetectors are currently being considered for several applications in the medical imaging field. In a typical monolithic detector, both the light intensity and the time of arrival of the earliest scintillation photons can be recorded by each of the photosensor pixels every time a gamma interaction occ...

Abstract Organic–inorganic perovskite crystals (C 6 H 5 C n 2 NH 3 ) PbCl 4 ( = 1: PMA, 2: PEA, 3: PPA, and 4: PBA) were prepared, their scintillation characteristics evaluated. A broad emission peak originating from self-trapped excitons (STE) was observed all of the when excited by 310 nm light. Further, also clearly PBA under X-ray. Moreover, light yields ? -ray calculated to be 1460 (PEA), ...

We designed the GammaKey system for the acquisition, storage and analysis of images from semi-analogue gamma scintillation cameras (GSCs). The GammaKey system, operating on a standard PC, replicates the functionality of earlier dedicated computer systems, allows the exchange of data in the DICOM format and has an open architecture enabling the development of new diagnostic techniques. The main ...

An essential component of the ionosphere is a small-scale electron density structure that causes scintillation of radio waves on transionospheric links. We briefly review the morphology of irregularities and physical mechanisms of their formation. Results of the scintillation theory relating statistical characteristics of irregularities and scintillation are also outlined. Examples of the scint...

Scintillation is a transmission impairment. The Received Satellite signals degradation due to the scintillation on space to earth link in tropical region. This proposed work goal is to find the performance evaluation of scintillation in clear sky conditions. To estimate and compare the statistic of atmospheric scintillation based on the parameters in ITUR model. To evaluate Atmospheric Amplitud...