Energy of ions (recoil nuclei) channeled along definite directions in crystals is transferred to the lattice electrons mainly. In NaI(Tl)-type scintillators, this leads to increasing the light yield from ∼10% to ∼100% when compared with the yield for electrons of the same energy. Taking into account this effect at processing data of DAMA/NaI experiments in Gran Sasso, which had demonstrated the...

DAMA is searching for rare processes by developing and using several kinds of radiopure scintillators: in particular, NaI(Tl), liquid Xenon and CaF 2 (Eu). The main results are here summarized with particular attention to the investigation of the WIMP annual modulation signature.

We investigate a hypothesis that energy accumulation and the subsequent release in NaI(Tl) may lead to pulse-like events few-keV regime, phenomenon suggested by crystal manufacturing company Saint-Gobain, who provided crystals for DAMA-LIBRA. While we observed delayed long-lasting light emission 3" after exposing it UV light, consists primarily of single photons are uncorrelated with each other...

Microstructured optical fibers containing alkali halide scintillation materials of CsI(Na), CsI(Tl), and NaI(Tl) are presented. The scintillation materials are grown inside the microstructured fibers using a modified BridgmanStockbarger technique. The x-ray photon counts of these fibers, with and without an aluminum film coating are compared to the output of a collimated CdTe solid state detect...

Abstract We report measurements of the angular distributions low momentum atmospheric muons at 38 m above sea level for zenith angles θ between -60 and 60 degrees in south-north direction. The muon detection was performed with two NaI(Tl) scintillation detectors mounted coincidence. An adjustable lead thickness placed allowed to select a minimal ranging from 0.3 0.9 GeV/c. integrated differenti...