No abstract available

[en] Improved limits on WIMP-¹²⁹Xe inelastic scattering have been obtained by analysing a statistics of approx. 2500 kg day, collected by the low radioactivity approx. 6.5 kg DAMA liquid xenon scintillator deep underground in the Gran Sasso National Laboratory of the INFN. (author)

[en] DAMA experiment is an observatory for rare events mainly devoted to WIMP search at the Gran Sasso National Laboratory of the I.N.F.N.. In this paper, the most recent results obtained with the ≅6.5 kg liquid Xenon set-up are briefly summarized

[en] Improved limits on WIMP-¹²⁹Xe inelastic scattering have been obtained by analysing a statistics of ≅2500 kg day, collected by the low radioactivity ≅6.5 kg DAMA liquid xenon scintillator deep underground in the Gran Sasso National Laboratory of the INFN

[en] DAMA experiments are running deep underground in the Gran Sasso National Laboratory of I.N.F.N. Results on various rare event searches and, in particular, on WIMP annual modulation signature have been achieved

[en] The potentiality of the coincidence technique to search for ββ decay processes in ¹³⁰Ba has been studied. A BaF₂ crystal scintillator with a mass of 3615 g and two low background NaI(Tl) detectors have been used for this purpose. The performances of the BaF₂ detector in the used set-up have preliminarily been investigated, in particular: (i) the α/β light ratio, (ii) the pulse shape discrimination capability between α and β particles, (iii) the main radioactive contaminations of the crystal. As a result, new limits (90% CL) on the lifetimes of the following double beta decay processes in ¹³⁰Ba have been determined: τ^{2β+0ν(0+→0+)}>1.1x10¹⁷ y, τ^{2β+0ν(0+→2₁+)}>1.5x10¹⁷ y, τ^{ECβ+0ν(0+→0+)}>2.0x10¹⁷ y, τ^{ECβ+0ν(0+→2₁+)}>1.6x10¹⁷ y, τ^{ECβ+0ν(0+→2₂+)}>2.0x10¹⁷ y and τ^{ECβ+0ν(0+→4+)}>1.1x10¹⁷ y. The new experimental limits obtained for the 0ν(0⁺→0⁺) decay modes represent a significant improvement with respect to those previously available for this isotope, while those involving excited levels are set here for the first time

[en] DAMA is searching for rare processes by developing and using several kinds of radiopure scintillators: in particular, NaI(TI), liquid Xenon and CaF₂(Eu). Here only the results released so far on the WIMP annual modulation signature are shortly summarized. Next perspectives are briefly mentioned

[en] The DAMA set-ups are running deep underground in the Gran Sasso National Laboratory of the I.N.F.N.. Results on various rare event searches have been achieved. In particular, the results obtained in the investigation of the WIMP annual modulation signature obtained in four annual cycles (total statistics: 57986 kg · day) are summarized

[en] The main features of the low background DAMA pure liquid xenon scintillator set-up running deep underground in the Gran Sasso National Laboratory of the INFN are described

[en] The performances of a CeF₃ crystal scintillator with a mass of 49.3 g have been investigated. In particular, the α/β light ratio and the possibility of a pulse-shape discrimination between α particles and γ quanta have been studied. The radioactive contamination of the crystal has been investigated. The application of the obtained results in the search for rare processes such as the two neutrino double electron capture in ¹³⁶Ce and ¹³⁸Ce and the α activity in ¹⁴²Ce has been investigated. As a result, new T_1/2 limits for these processes have been determined (90% C.L.): T_1/2^2ν2K(¹³⁶Ce)≥2.7x10¹⁶ yr, T_1/2^2ν2K(¹³⁸Ce)≥3.7x10¹⁶ yr and T_1/2^α(¹⁴²Ce)≥2.9x10¹⁸ yr