As the millennium approaches we are faced with a period of increasing solar flux and intense ionospheric scintillation. Not only single-frequency, but also dualfrequency GPS measurements will be badly affected by deep scintillation, due to its temporal and spatial decorrelation characteristics. Using the scintillation observables derived from dual-frequency phase and signal-to-noise ratio measu...

Crystals are used as a homogeneous calorimetric medium in many high-energy physics experiments. For some experiments, performance has to be ensured in very difficult operating conditions, like a high radiation environment, very large particle fluxes, high collision rates, placing constraints on response and readout time. An overview is presented of recent achievements in the field, with particu...

This study presents the comparison of the cumulative distribution of tropospheric scintillation models in order to see which model suits the best with the measured one. About six different models were compared and studied with the measured one. The scintillation data were taken from January 2011 till December 2011 which totals up to a 12 month period. This paper also presents the percentage fra...

In the context of ClearMind project, we measured scintillating properties, as induced from gamma ray interactions, today available PbWO4 crystal. We scintillation s yields and time constants by measuring signal shape on a fast photo-multiplier deconvoluting it instrumental effects. For doped crystals at room temperature, component, with 2 ns, 55 percent total light yield, slow component 6 ns. o...

The Joint European Torus (JET) gamma-ray camera has been recently upgraded with the installation of new detectors, based on LaBr3(Ce) scintillation crystals, which add spectroscopic capability to existing system allowing measurements good energy resolution (5% at 0.622 MeV), a dynamic range from hundreds keV up about 30 MeV, and high counting rate capabilities MCps. First during C38 campaign JE...

We sought to determine the scale of scintillation in the interstellar plasma of PSR J0437−4715. We used the Very Long Baseline Array to obtain scintillation amplitude and phase data, from dynamic spectra at 327 MHz. We observe two scales of scintillation of pulsar PSR J0437−4715, differing by more than an order of magnitude in scintillation bandwidth. The widerbandwidth scale of scintillation t...