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142 results on '"A. Incicchitti"'

1. Search for 2β decay processes in 106Cd using 106CdWO4 crystal scintillator.

Author

Leoncini, A., Belli, P., Bernabei, R., Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F. A., Incicchitti, A., Kasperovych, D. V., Klavdiienko, V. R., Kobychev, V. V., Merlo, V., Polischuk, O. G., and Tretyak, V. I.

Subjects
SCINTILLATORS, DETECTORS, CRYSTALS, COINCIDENCE, GEOMETRY
Abstract

An experiment to search for 2β decay processes in 106Cd using a 106CdWO4 crystal scintillator (215.4 g) enriched in 106Cd to 66% is in progress in the DAMA/R&D setup at LNGS of INFN (Italy). The enriched crystal was placed in a close geometry with two CdWO4 crystal scintillators in order to optimise the detection efficiency to γ's that can be emitted in the 2β+ decay processes in 106Cd. The data has been accumulated for 664 days considering the coincidence and/or anticoincidence events in the three detectors. No effects have been observed and only lower limits on the half-lives for the 2β decay processes in 106Cd have been set. They are at the level of lim T1/2 ~ 1020-1022 years. The limit on the half-life for the 2νεβ+ in 106Cd was preliminarily estimated as T1/2 ≥2.1×1021 yr, which approaches the theoretical expectations for this process that are in the range of T1/2 = 1021-1022 yr. [ABSTRACT FROM AUTHOR]

Published
2025
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2. Search for α and 2β decays of naturally occurring osmium nuclides accompanied by γ quanta.

Author

Caracciolo, V., Belli, P., Bernabei, R., Cappella, F., Cerulli, R., Danevich, F. A., Incicchitti, A., Kasperovych, D. V., Kobychev, V. V., Kovtun, G. P., Kovtun, N. G., Leoncini, A., Laubenstein, M., Merlo, V., Poda, D. V., Polischuk, O. G., Shcherban, A. P., Tessalina, S., and Tretyak, V. I.

Subjects
OSMIUM isotopes, MASS spectrometry, OSMIUM, NUCLIDES, GOVERNMENT laboratories
Abstract

A search for α and ββ decays of naturally occurring osmium isotopes to the excited levels of daughter nuclei has been performed using an ultra-low-background broad-energy germanium γ detector and an ultrapure osmium sample at the Gran Sasso National Laboratory of the INFN (Italy). The isotopic composition of the osmium sample has been measured with high precision by using negative thermal ionization mass spectrometry. During the data taking with the γ detector, no effect has been detected, and lower limits for the half-life of α and ββ decays were set at the level of 1015−1020 yr. In the case of α decays of 184Os and 186Os to the first excited levels of daughter nuclei, the limits substantially exceed the present theoretical estimates of the decays probabilities. This gives hope to the possibility to detect such transitions in the ongoing data taking. The present work will describe a review of recent new measurements and new experimental perspectives. [ABSTRACT FROM AUTHOR]

Published
2025
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3. Current status of the search for 2β decay of 106Cd using 106CdWO4 crystal scintillator.

Author

Leoncini, A., Belli, P., Bernabei, R., Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F. A., Incicchitti, A., Kasperovych, D. V., Klavdiienko, V. R., Kobychev, V. V., Merlo, V., Polischuk, O. G., and Tretyak, V. I.

Subjects
SCINTILLATION counters, MONTE Carlo method, RADIOACTIVE contamination, DETECTORS, DATA analysis, ATOMIC absorption spectroscopy
Abstract

An experiment to study 2β decay processes in 106Cd using a 106CdWO4 crystal scintillator of mass 215.4 g enriched in 106Cd to 66% is ongoing in the DAMA/R&D setup at the LNGS of INFN (Italy). The events in the 106CdWO4 detector are recorded in (anti)coincidences with two large-volume CdWO4 scintillation counters. The design of the detector system, the calibration and background measurements, methods and results of data analysis to determine key detector characteristics are described. The experimental data are compared with Monte Carlo simulation results, and a background model is constructed. The radioactive contamination of the setup components is studied. The limit on the half-life for the 2νεβ+ decay in 106Cd was preliminarily estimated as lim T1/2 = 3.5×1021, which approaches the theoretical expectations for this process. [ABSTRACT FROM AUTHOR]

Published
2024
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4. Dark matter directionality approach

Author

Bernabei, R., primary, Belli, P., additional, Caracciolo, V., additional, Cerulli, R., additional, Merlo, V., additional, Cappella, F., additional, Incicchitti, A., additional, Cherubini, N., additional, Piccinelli, E., additional, Danevich, F. A., additional, Kasperovych, D. V., additional, Polischuk, O. G., additional, and Tretyak, V. I., additional

Published
2023
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5. The dark matter: DAMA/LIBRA and its perspectives

Author

Bernabei, R., primary, Belli, P., additional, Caracciolo, V., additional, Cerulli, R., additional, Merlo, V., additional, Cappella, F., additional, d’Angelo, A., additional, Incicchitti, A., additional, Dai, C.J., additional, Ma, X.H., additional, Sheng, X.D., additional, Montecchia, F., additional, and Ye, Z.P., additional

Published
2023
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6. First results from DAMA/LIBRA phase2

Author

Bernabei, R., primary, Belli, P., additional, Bussolotti, A., additional, Cerulli, R., additional, Di Marco, A., additional, Merlo, V., additional, Montecchia, F., additional, Cappella, F., additional, d’Angelo, A., additional, Incicchitti, A., additional, Mattei, A., additional, Caracciolo, V., additional, Dai, C. J., additional, He, H. L., additional, Ma, X. H., additional, Sheng, X. D., additional, and Ye, Z. P., additional

Published
2022
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7. ENLIGHTENING THE DARK UNIVERSE

Author

Bernabei, R., primary, Belli, P., additional, Bussolotti, A., additional, Cerulli, R., additional, Di Marco, A., additional, Merlo, V., additional, Montecchia, F., additional, Cappella, F., additional, d’Angelo, A., additional, Incicchitti, A., additional, Mattei, A., additional, Caracciolo, V., additional, Dai, C.J., additional, He, H.L., additional, Ma, X.H., additional, Sheng, X.D., additional, and Ye, Z.P., additional

Published
2021
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8. DAMA/LIBRA RESULTS AND PERSPECTIVES

Author

Bernabei, R., primary, Belli, P., additional, Cerulli, R., additional, d’Angelo, S., additional, Di Marco, A., additional, Merlo, V., additional, Montecchia, F., additional, d’Angelo, A., additional, Incicchitti, A., additional, Cappella, F., additional, Caracciolo, V., additional, Dai, C.J., additional, He, H.L., additional, Kuang, H.H., additional, Ma, X.H., additional, Sheng, X.D., additional, Wang, R.G., additional, and Ye, Z.P., additional

Published
2019
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9. New limit on two neutrino electron capture with positron emission in 106Cd

Author

Polischuk, O. G., primary, Belli, P., additional, Bernabei, R., additional, Brudanin, V. B., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Danevich, F. A., additional, Incicchitti, A., additional, Kasperovych, D. V., additional, Kobychev, V. V., additional, Tretyak, V. I., additional, and Zarytskyy, M. M., additional

Published
2019
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10. Aurora experiment: Final results of studies of 116Cd 2β decay with enriched 116CdWO4 crystal scintillators

Author

Tretyak, V. I., primary, Barabash, A. S., additional, Belli, P., additional, Bernabei, R., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Chernyak, D. M., additional, Danevich, F. A., additional, d’Angelo, S., additional, Incicchitti, A., additional, Kasperovych, D. V., additional, Kobychev, V. V., additional, Konovalov, S. I., additional, Laubenstein, M., additional, Poda, D. V., additional, Polischuk, O. G., additional, Shlegel, V. N., additional, Umatov, V. I., additional, and Vasiliev, Ya. V., additional

Published
2019
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11. Study of double-β decay of 150Nd to the first 0+ excited level of 150Sm

Author

Kasperovych, D. V., primary, Barabash, A. S., additional, Belli, P., additional, Bernabei, R., additional, Boiko, R. S., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Danevich, F. A., additional, Di Marco, A., additional, Incicchitti, A., additional, Kobychev, V. V., additional, Konovalov, S. I., additional, Laubenstein, M., additional, Poda, D. V., additional, Polischuk, O. G., additional, Tretyak, V. I., additional, and Umatov, V. I., additional

Published
2019
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12. Aurora Experiment: Final Results of Studies of 116Cd 2β Decay with Enriched 116CdWO4 Crystal Scintillators.

Author

Tretyak, V. I., Barabash, A. S., Belli, P., Bernabei, R., Cappella, F., Caracciolo, V., Cerulli, R., Chernyak, D. M., Danevich, F. A., d’Angelo, S., Incicchitti, A., Kasperovych, D. V., Kobychev, V. V., Konovalov, S. I., Laubenstein, M., Poda, D. V., Polischuk, O. G., Shlegel, V. N., Umatov, V. I., and Vasiliev, Ya. V.

Subjects
EXCITED states, CRYSTALS, SCINTILLATORS
Abstract

Final results of studies of 116Cd 2β decay with CdWO4 crystal scintillators, enriched in 116Cd to 82%, are presented. After few years (2011 – 2017) of measurements with radiopure 116CdWO4 scintillators (mass of 1.162 kg) at the Gran Sasso underground laboratory (Italy), the half-life of 116Cd relatively to 2ν2β decay to the ground state of 116Sn was measured with the highest up-to-date accuracy as T1/2=(2.63−0.12+0.11)×1019 yr. A new limit on 0ν2β decay of 116Cd was set as T1/2≥2.2×1023 yr at 90% C.L., which is the most stringent to-date restriction for this isotope. Limits for 0ν2β decay with majoron(s) emission, Lorentz-violating 2ν2β decay and 2β transitions to excited states of 116Sn were set at the level of T1/2≥1020−1022 yr. [ABSTRACT FROM AUTHOR]

Published
2019
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13. New limit on two neutrino electron capture with positron emission in 106Cd.

Author

Polischuk, O. G., Belli, P., Bernabei, R., Brudanin, V. B., Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F. A., Incicchitti, A., Kasperovych, D. V., Kobychev, V. V., Tretyak, V. I., and Zarytskyy, M. M.

Subjects
ELECTRON capture, POSITRON emission, DOUBLE beta decay, MONTE Carlo method, RADIOACTIVE contamination, NEUTRINO interactions
Abstract

An experiment to search for double beta processes in 106Cd is in progress with the help of 106CdWO4 crystal scintillator (enriched in 106Cd to 66%) in coincidence with two large volume CdWO4 crystal scintillators in close geometry at the Gran Sasso Underground Laboratory. The time resolution of the set-up was analyzed, and the methods of pulse-shape discrimination of α and γ(β) events was applied to estimate the radioactive contamination of the crystal and to reduce the background counting rate. The possible double beta decay processes and the background components have been simulated by a Monte Carlo method with GEANT4. The experimental sensitivity is approaching the theoretical predictions for the two-neutrino electron capture with positron emission in 106Cd: lim T1/2≥4×1021 yr at 90% C.L. (the best previous limit was established in the previous stage of the experiment as T1/2≥1.1× 1021 yr, while the theoretical predictions are in the region of T1/2∼1021−1022 yr). [ABSTRACT FROM AUTHOR]

Published
2019
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14. Study of double-β decay of 150Nd to the first 0+ excited level of 150Sm.

Author

Kasperovych, D. V., Barabash, A. S., Belli, P., Bernabei, R., Boiko, R. S., Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F. A., Di Marco, A., Incicchitti, A., Kobychev, V. V., Konovalov, S. I., Laubenstein, M., Poda, D. V., Polischuk, O. G., Tretyak, V. I., and Umatov, V. I.

Subjects
GERMANIUM radiation detectors, STATISTICAL errors, SAMARIUM, COINCIDENCE, SPECTROMETERS
Abstract

Two-neutrino 2β decay of 150Nd to the 01+ 740.5-keV excited level of 150Sm has been investigated by using a highly purified 2.381-kg Nd2O3 sample with the help of ultra-low-background gamma spectrometer with 4 HPGe detectors (≈ 255 cm³ each) at the Gran Sasso underground laboratory (INFN, Italy). Gamma quanta, expected in cascade after de-excitation of the 01+ (740.5 keV) excited level of 150Sm, have been observed in the coincidence spectra accumulated over 25947 h. The half-life value has been preliminary estimated as T1/2=[6.9−1.9+4.0(stat)±1.1(syst)]×109y. The data taking is in progress to reduce the statistical error. [ABSTRACT FROM AUTHOR]

Published
2019
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15. DAMA/LIBRA-phase1 results and perspectives of the phase2

Author

Bernabei, R., primary, Belli, P., additional, Di Marco, A., additional, Montecchia, F., additional, d’Angelo, A., additional, Incicchitti, A., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Dai, C.J., additional, He, H.L., additional, Kuang, H.H., additional, Ma, X.H., additional, Sheng, X.D., additional, Wang, R.G., additional, and Ye, Z.P., additional

Published
2017
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16. DAMA/LIBRA Results and Perspectives.

Author

Aharonov, Y., Bravina, L., Kabana, S., Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C.J., d'Angelo, A., Di Marco, A., He, H.L., Incicchitti, A., Kuang, H.H., Ma, X.H., Montecchia, F., Sheng, X.D., Wang, R.G., and Ye, Z.P.

Subjects
DARK matter, GALACTIC halos, ASTRONOMICAL observations, NUCLEAR reactions, PHASE transitions
Abstract

The DAMA/LIBRA experiment (~ 250 kg sensitive mass composed by highly radio-pure NaI(Tl)) is in data taking in the underground Laboratory of Gran Sasso (LNGS). In its first phase (DAMA/LIBRA-phase1) this experiment and the former DAMA/NaI experiment (~ 100 kg of highly radio-pure NaI(Tl)) collected data for 14 independent annual cycles, exploiting the model-independent Dark Matter (DM) annual modulation signature (total exposure 1.33 ton x yr). A DM annual modulation effect has been observed at 9.3 σ C.L., supporting the presence of DM particles in the galactic halo. No systematic or side reaction able to mimic the observed DM annual modulation has been found or suggested by anyone. Recent analyses on possible diurnal effects, on the Earth shadowing effect and on possible interpretation in terms of Mirror DM will be mentioned. At present DAMA/LIBRA is running in its phase2 with increased sensitivity. [ABSTRACT FROM AUTHOR]

Published
2018
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17. Search for rare processes with DAMA experimental set-ups.

Author

Aharonov, Y., Bravina, L., Kabana, S., Barabash, A.S., Belli, P., Bernabei, R., Boiko, R.S., Brudanin, V.B., Cappella, F., Caracciolo, V., Cerulli, R., Chernyak, D.M., Dai, C.J., Danevich, F.A., d'Angelo, A., Di Marco, A., He, H.L., Incicchitti, A., Kasperovych, D.V., and Kobychev, V.V.

Subjects
DARK matter, CADMIUM isotopes, ANISOTROPY, ZINC compounds, SCINTILLATORS
Abstract

Profiting of the favourable conditions offered by the Gran Sasso underground laboratory and of the several low-background DAMA set-ups, many and competitive results have been obtained for rare processes. Here the main results will be briefly resumed and some more details about the latest activities will be given. In particular, the searches on ββdecays of 106Cd and 116Cd and the perspectives of a complementary investigation on those Dark Matter (DM) candidates inducing just nuclear recoils, by exploiting the directionality approach with the anisotropic ZnWO4 scintillators, will be underlined. [ABSTRACT FROM AUTHOR]

Published
2018
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18. Results and perspectives of DAMA/LIBRA

Author

Bernabei, R., primary, Belli, P., additional, Cerulli, R., additional, Di Marco, A., additional, Merlo, V., additional, Montecchia, F., additional, Cappella, F., additional, d’Angelo, A., additional, Incicchitti, A., additional, Caracciolo, V., additional, Dai, C. J., additional, He, H. L., additional, Kuang, H. H., additional, Ma, X. H., additional, Sheng, X. D., additional, Wang, R. G., additional, and Ye, Z. P., additional

Published
2017
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19. Investigation of 2β decay of 116Cd with the help of enriched 116CdWO4 crystal scintillators

Author

Polischuk, O. G., primary, Barabash, A. S., additional, Belli, P., additional, Bernabei, R., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Chernyak, D. M., additional, Danevich, F. A., additional, d’Angelo, S., additional, Incicchitti, A., additional, Kasperovych, D. V., additional, Kobychev, V. V., additional, Konovalov, S. I., additional, Laubenstein, M., additional, Mokina, V. M., additional, Poda, D. V., additional, Shlegel, V. N., additional, Tretyak, V. I., additional, Umatov, V. I., additional, and Vasiliev, Ya. V., additional

Published
2017
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20. Search for double beta decay in 106Cd in the DAMA/CRYS setup

Author

Belli, P., primary, Bernabei, R., additional, Brudanin, V. B., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Danevich, F. A., additional, Incicchitti, A., additional, Kasperovych, D. V., additional, Kobychev, V. V., additional, Mokina, V. M., additional, Polischuk, O. G., additional, Tretyak, V. I., additional, and Zarytskyy, M. M., additional

Published
2017
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21. Highlights on signals from Dark Matter particles.

Author

Bernabei, R., Belli, P., Di Marco, A., Montecchia, F., d'Angelo, A., Incicchitti, A., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., He, H. L., Kuang, H. H., Ma, X. H., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
DARK matter, PARTICLE interactions, GALACTIC halos, STANDARD model (Nuclear physics), ANNIHILATION reactions, BARYON decay
Abstract

Many experimental observations and theoretical arguments have pointed out that a large fraction of the Universe is composed by Dark Matter particles. Many possibilities are open on the nature and interaction types of such relic particles. In particular, this paper summarizes the main results obtained by exploiting the model independent Dark Matter annual modulation signature for the presence of Dark Matter particles in the galactic halo by DAMA experiment. [ABSTRACT FROM AUTHOR]

Published
2017
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22. Search for Double Beta Decay in 106Cd in the DAMA/CRYS setup.

Author

Belli, P., Bernabei, R., Brudanin, V. B., Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F. A., Incicchitti, A., Kasperovych, D. V., V.V. Kobychev, Mokina, V. M., Polischuk, O. G., Tretyak, V. I., and Zarytskyy, M. M.

Subjects
BETA decay, CADMIUM, CRYSTALS, SCINTILLATORS, NUCLEAR reactions
Abstract

An experiment to search for double beta decay in 106Cd is running in the DAMA/CRYS set-up at the Gran Sasso National Laboratory of the INFN (Italy). In this experiment a 106CdWO4 crystal scintillator (215 g) enriched in 106Cd to 66%, used in previous measurements in different configurations, is now in measurement in coincidence with two large volume low background CdWO4 crystal scintillators in close geometry. This further measurement will allow us to reach a sensitivity at the level of the most sensitive double β+ experiments (T1/2 1020-1022 yr) and to explore the region of the theoretical expectations for some decay modes. [ABSTRACT FROM AUTHOR]

Published
2017
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23. ZnWO4 anisotropic scintillator for Dark Matter investigation with the directionality technique.

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F. A., d'Angelo, A., Di Marco, A., Incicchitti, A., Mokina, V. M., Poda, D. V., Polischuk, O. G., Taruggi, C., and Tretyak, V. I.

Subjects
SCINTILLATORS, DARK matter, SCINTILLATION spectrometry, CRYSTAL detectors, ANISOTROPY, ASTROPHYSICS
Abstract

The ZnWO4 crystal scintillator has unique features that make it very promising to realize a pioneering experiment to pursue Dark Matter investigation with the directionality technique. In particular in this detector the light output and the scintillation pulse shape for heavy particles (p, α, nuclear recoils) depend on the direction of the impinging particle with respect to the crystal axes, while the response to γ/β radiation is isotropic. The anisotropy of the light output can be considered to point out the presence in the diurnal counting rate of a Dark Matter signal produced by candidate particle inducing just nuclear recoils. In addition this crystal detector has also other important characteristics for a Dark Matter experiment: high light output, high level of radiopurity. In this paper the present performances of the developed ZnWO4 crystal scintillator will be summarized together with the possible future improvements. Some reachable sensitivities - under given assumptions - in the investigation of DM candidate particles with the directionality technique will also be addressed. [ABSTRACT FROM AUTHOR]

Published
2017
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24. DAMA/LIBRA results and perspectives.

Author

Bernabei, R., Belli, P., Di Marco, A., Montecchia, F., Incicchitti, A., d'Angelo, A., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., He, H. L., Kuang, H. H., Ma, X. H., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
MODULATION spectroscopy, ASTRONOMICAL observatories, GALACTIC halos, PARTICLE physics, GALACTIC center
Abstract

The DAMA/LIBRA experiment (∼ 250 kg sensitive mass composed by highly radio-pure NaI(Tl)) is in data taking in the underground Laboratory of Gran Sasso (LNGS). Its first phase (DAMA/LIBRA-phase1) and the former DAMA/NaI experiment (∼ 100 kg of highly radio-pure NaI(Tl)) collected data for 14 independent annual cycles, exploiting the model-independent Dark Matter (DM) annual modulation signature (total exposure 1.33 ton × yr). A DM annual modulation effect has been observed at 9.3 σ C.L., supporting the presence of DM particles in the galactic halo. No systematic or side reaction able to mimic the observed DM annual modulation has been found or suggested by anyone. Recent analyses on possible diurnal effects, on the Earth shadowing effect and on possible interpretation in terms of Asymmetric Mirror DM will be mentioned. At present DAMA/LIBRA is running in its phase2 with increased sensitivity. [ABSTRACT FROM AUTHOR]

Published
2017
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25. Highlights of DAMA/LIBRA.

Author

Bernabei, R., Belli, P., d'Angelo, A., Di Marco, A., Montecchia, F., Incicchitti, A., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., He, H. L., Kuang, H. H., Ma, X. H., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
SCINTILLATORS, DARK matter, GALACTIC dynamics, GALACTIC halos, SODIUM
Abstract

The DAMA project develops and uses new/improved low background scintillation detectors to investigate the Dark Matter (DM) particle component(s) in the galactic halo and rare processes deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N.. Here some highlights of DAMA/LIBRA (Large sodium Iodide Bulk for Rare processes) as a unique apparatus in direct DM investigation for its full sensitive mass, target material, intrinsic radio-purity, methodological approach and all the controls performed on the experimental parameters are outlined. The DAMA/LIBRA-phase1 and the former DAMA/NaI data (cumulative exposure 1.33 ton × yr, corresponding to 14 annual cycles) have reached a model-independent evidence at 9.3 σ C.L. for the presence of DM particles in the galactic halo exploiting the DM annual modulation signature with highly radio-pure NaI(Tl) target. Some of the perspectives of the presently running DAMA/LIBRA-phase2 are summarised and the powerful tools offered by a model independent strategy of DM investigation are pointed out. [ABSTRACT FROM AUTHOR]

Published
2016
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26. NEW RESULTS FROM DAMA/LIBRA

Author

Bernabei, R., primary, Belli, P., additional, d'Angelo, S., additional, Di Marco, A., additional, Montecchia, F., additional, Cappella, F., additional, d'Angelo, A., additional, Incicchitti, A., additional, Caracciolo, V., additional, Castellano, S., additional, Cerulli, R., additional, Dai, C. J., additional, He, H. L., additional, Kuang, H. H., additional, Ma, X. H., additional, Sheng, X. D., additional, Wang, R. G., additional, and Ye, Z. P., additional

Published
2015
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27. RECENT RESULTS ON THE SEARCH FOR 2β DECAY PROCESSES WITH SCINTILLATORS AND PURE SAMPLES

Author

Bernabei, R., primary, Belli, P., additional, d'Angelo, S., additional, Di Marco, A., additional, Cappella, F., additional, Incicchitti, A., additional, Polischuka, O. G., additional, Boiko, R. S., additional, Chernyak, D. M., additional, Danevich, F. A., additional, Kobychev, V. V., additional, Mokina, V. M., additional, Poda, D. V., additional, Tretyak, V. I., additional, Caracciolo, V., additional, Castellano, S., additional, Cerulli, R., additional, Laubenstein, M., additional, Barabash, A. S., additional, Konovalov, S. I., additional, Umatov, V. I., additional, and Brudanin, V. B., additional

Published
2015
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28. RESULTS FROM DAMA/LIBRA AND PERSPECTIVES

Author

BERNABEI, R., primary, BELLI, P., additional, DI MARCO, A., additional, MONTECCHIA, F., additional, CAPPELLA, F., additional, D'ANGELO, A., additional, INCICCHITTI, A., additional, CARACCIOLO, V., additional, CERULLI, R., additional, DAI, C.J., additional, HE, H.L., additional, MA, X.H., additional, SHENG, X.D., additional, WANG, R.G., additional, and YE, Z.P., additional

Published
2015
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29. Search for double beta processes in 106Cd with enriched 106CdWO4 crystal scintillator in coincidence with four crystals HPGe detector

Author

Danevich, F. A., primary, Belli, P., additional, Bernabei, R., additional, Brudanin, V. B., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Chernyak, D. M., additional, D’Angelo, S., additional, Incicchitti, A., additional, Laubenstein, M., additional, Mokina, V. M., additional, Poda, D. V., additional, Polischuk, O. G., additional, Tretyak, V. I., additional, and Tupitsyna, I. A., additional

Published
2015
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30. Investigation of double beta decay of 116Cd with the help of enriched 116CdWO4 crystal scintillators

Author

Polischuk, O. G., primary, Barabash, A. S., additional, Belli, P., additional, Bernabei, R., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Chernyak, D. M., additional, Danevich, F. A., additional, d’Angelo, S., additional, Incicchitti, A., additional, Kobychev, V. V., additional, Konovalov, S. I., additional, Laubenstein, M., additional, Mokina, V. M., additional, Poda, D. V., additional, Shlegel, V. N., additional, Tretyak, V. I., additional, Umatov, V. I., additional, and Vasiliev, Ya. V., additional

Published
2015
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31. Investigation of double beta decay of 116Cd with the help of enriched 116CdWO4 crystal scintillators.

Author

Polischuk, O. G., Barabash, A. S., Belli, P., Bernabei, R., Cappella, F., Caracciolo, V., Cerulli, R., Chernyak, D. M., Danevich, F. A., d'Angelo, S., Incicchitti, A., Kobychev, V. V., Konovalov, S. I., Laubenstein, M., Mokina, V. M., Poda, D. V., Shlegel, V. N., Tretyak, V. I., Umatov, V. I., and Vasiliev, Ya. V.

Subjects
DOUBLE beta decay, CADMIUM tungstate crystals, SCINTILLATORS, NUCLEAR physics, ESTIMATES
Abstract

An experiment to search for 2β processes in 116Cd with the help of enriched (to 82%) cadmium tungstate crystal scintillators is in progress at the Gran Sasso National Laboratory of the INFN (LNGS, Italy). After 11074 h of data taking in the last configuration, the preliminary estimate for the half-life of 116Cd relatively to 2ν2β decay is T1/2 = [2.52 ± 0.02(stat.) ± 0.14(syst.)] × 1019 yr. By using the data of previous stages of the experiment with a similar level of background (≈ 0.1 counts/(keV kg yr) in the energy interval 2.7 – 2.9 MeV; the total time of measurements is 19770 h) we have obtained a new limit on the 0ν2β decay of 116Cd to the ground state of 116Sn: T1/2 ≥ 1.9 × 1023 yr at 90% C.L. New limits on different 2β processes in 116Cd (decays with majorons, transitions to the excited levels) are obtained on the level of T1/2 ≥ 1020 – 1022 yr. [ABSTRACT FROM AUTHOR]

Published
2015
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32. Search for double beta processes in 106Cd with enriched 106CdWO4 crystal scintillator in coincidence with four crystals HPGe detector.

Author

Danevich, F. A., Belli, P., Bernabei, R., Brudanin, V. B., Cappella, F., Caracciolo, V., Cerulli, R., Chernyak, D. M., D'Angelo, S., Incicchitti, A., Laubenstein, M., Mokina, V. M., Poda, D. V., Polischuk, O. G., Tretyak, V. I., and Tupitsyna, I. A.

Subjects
DOUBLE beta decay, CADMIUM tungstate crystals, SCINTILLATORS, COINCIDENCE circuits, GERMANIUM radiation detectors, NEUTRINO electric moments
Abstract

A radiopure cadmium tungstate crystal scintillator, enriched in 106Cd (106CdWO4), was used to search for double beta decay processes in 106Cd in coincidence with an ultra-low background set-up containing four high purity germanium (HPGe) detectors in a single cryostat. The experiment has been completed after 13085 h of data taking. New improved limits on most of the double beta processes in 106Cd have been set on the level of 1020−1021 yr. Tn particular, the half-life limit on the two neutrino electron capture with positron emission, T1/2 ≥ 1.8 × 1021 yr, reached the region of theoretical predictions. [ABSTRACT FROM AUTHOR]

Published
2015
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33. DAMA/LIBRA-phase1 results and perspectives of the phase2.

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., d'Angelo, A., d'Angelo, S., Di Marco, A., He, H. L., Incicchitti, A., Kuang, H. H., Ma, X. H., Montecchia, F., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
GALACTIC halos, DARK matter, NUCLEAR particle research, EARTH'S orbit, PARTICLE physics
Abstract

The results obtained with the total exposure of 1.04 ton x yr collected by DAMA/LIBRA--phase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. during 7 annual cycles are summarized. The DAMA/LIBRA--phase1 and the former DAMA/NaI data (cumulative exposure 1.33 ton x yr, corresponding to 14 annual cycles) give evidence at 9.3 σ C.L. for the presence of Dark Matter (DM) particles in the galactic halo, on the basis of the exploited model independent DM annual modulation signature by using highly radio-pure NaI(Tl) target. No systematic or side reaction able to mimic the exploited DM signature has been found or suggested by anyone over more than a decade. The same data of DAMA/LIBRA--phase1 have also been analyzed searching for possible DM second-order diurnal effect; at present, the DM diurnal modulation amplitude -- expected because of the Earth diurnal motion -- evaluated on the basis of the DAMA Dark Matter annual modulation results is below the reached experimental sensitivity. Some of the perspectives of the presently running DAMA/LIBRA--phase2 are outlined. [ABSTRACT FROM AUTHOR]

Published
2015
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34. Crystal scintillators for low background measurements

Author

Bernabei, R., primary, Belli, P., additional, Cappella, F., additional, Caracciolo, V., additional, Castellano, S., additional, Cerulli, R., additional, Boiko, R. S., additional, Chernyak, D. M., additional, Danevich, F. A., additional, Dai, C. J., additional, d'Angelo, A., additional, d'Angelo, S., additional, Di Marco, A., additional, He, H. L., additional, Incicchitti, A., additional, Ma, X. H., additional, Mokina, V. M., additional, Montecchia, F., additional, Poda, D. V., additional, Polischuk, O. G., additional, Sheng, X. D., additional, Wang, R. G., additional, Ye, Z. P., additional, and Tretyak, V. I., additional

Published
2013
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35. Search for rare nuclear decays with HPGe detectors at the STELLA facility of the LNGS

Author

Belli, P., primary, Bernabei, R., additional, Cappella, F., additional, Cerulli, R., additional, Danevich, F. A., additional, d'Angelo, A., additional, d'Angelo, S., additional, Di Marco, A., additional, Di Vacri, M. L., additional, Incicchitti, A., additional, Kobychev, V. V., additional, Kovtun, G. P., additional, Kovtun, N. G., additional, Laubenstein, M., additional, Nisi, S., additional, Poda, D. V., additional, Polischuk, O. G., additional, Shcherban, A. P., additional, Solopikhin, D. A., additional, Suhonen, J., additional, Tolmachev, A. V., additional, Tretyak, V. I., additional, and Yavetskiy, R. P., additional

Published
2013
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36. Purification of lanthanides for double beta decay experiments

Author

Polischuk, O. G., primary, Barabash, A. S., additional, Belli, P., additional, Bernabei, R., additional, Boiko, R. S., additional, Cappella, F., additional, Cerulli, R., additional, Danevich, F. A., additional, Incicchitti, A., additional, Laubenstein, M., additional, Mokina, V. M., additional, Nisi, S., additional, Poda, D. V., additional, and Tretyak, V. I., additional

Published
2013
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37. Development of radiopure cadmium tungstate crystal scintillators from enriched [sup 106]Cd and [sup 116]Cd to search for double beta decay

Author

Danevich, F. A., primary, Barabash, A. S., additional, Belli, P., additional, Bernabei, R., additional, Boiko, R. S., additional, Brudanin, V. B., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Chernyak, D. M., additional, d'Angelo, S., additional, Degoda, V. Ya., additional, di Vacri, M. L., additional, Dossovitskiy, A. E., additional, Galashov, E. N., additional, Incicchitti, A., additional, Kobychev, V. V., additional, Konovalov, S. I., additional, Kovtun, G. P., additional, Kropivyansky, B. N., additional, Laubenstein, M., additional, Mikhlin, A. L., additional, Mokina, V. M., additional, Nikolaiko, A. S., additional, Nisi, S., additional, Poda, D. V., additional, Podviyanuk, R. B., additional, Polischuk, O. G., additional, Shcherban, A. P., additional, Shlegel, V. N., additional, Solopikhin, D. A., additional, Tretyak, V. I., additional, Umatov, V. I., additional, Vasiliev, Ya. V., additional, and Virich, V. D., additional

Published
2013
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38. New results and perspectives of DAMA/LIBRA.

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Castellano, S., Cerulli, R., Dai, C. J., d'Angelo, A., d'Angelo, S., DiMarco, A., He, H. L., Incicchitti, A., Kuang, H. H., Ma, X. H., Montecchia, F., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
PARTICLE detectors, DARK matter, GALACTIC halos, PHOTOMULTIPLIERS, RADIOCHEMICAL purification
Abstract

The results obtained with the total exposure of 1.04 ton x yr col lected by DAMA/LIBRA--phase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. during 7 annual cycles are briefly summarized. The DAMA/LIBRA--phase1 and the former DAMA/NaI data (cumulative exposure 1.33 ton x yr, corresponding to 14 annual cycles) give evidence at 9.3 σ C.L. for the presence of Dark Matter (DM) particles in the galactic halo, on the basis of the exploited model inde- pendent DM annual modulation signature by using highly radio-pure NaI(Tl) target. The modulation parameters are well in agreement with those expected for DM particles. No systematic or side reaction able to mimic the exploited DM signature has been found or suggested by anyone over more than a decade. Some of the perspectives of the presently running DAMA/LIBRA--phase2 are outlined. [ABSTRACT FROM AUTHOR]

Published
2014
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39. The Dark Matter annual modulation results from DAMA/LIBRA.

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., d'Angelo, A., Di Marco, A., He, H. L., Incicchitti, A., Ma, X. H., Montecchia, F., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
DARK matter, INTERSTELLAR medium, PARTICLES, GALACTIC halos, PHOTOMULTIPLIERS
Abstract

The DAMA/LIBRA experiment, running at the Gran Sasso National Laboratory of the I.N.F.N. in Italy, has a sensitive mass of about 250 kg highly radiopure NaI(Tl). It is mainly devoted to the investigation of Dark Matter (DM) particles in the Galactic halo by exploiting the model independent DM annual modulation signature. The present DAMA/LIBRA experiment and the former DAMA/NaI one (the first generation experiment having an exposed mass of about 100 kg) have released so far results corresponding to a total exposure of 1.17 ton x yr over 13 annual cycles. They provide a model independent evidence of the presence of DM particles in the galactic halo at 8.9 σ C.L. on the basis of the investigated DM signature. The data of another annual cycle in the same DAMA/LIBRA running conditions are at hand. After the replacement at the end of 2012 of all the photomultipliers (PMTs) with new ones, having higher quantum efficiency, DAMA/LIBRA has entered to its phase 2; such a replacements allowed the lowering of the software energy threshold of the experiment in the present data taking. A short summary of the obtained results is presented and future perspectives of the experiment mentioned. [ABSTRACT FROM AUTHOR]

Published
2014
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40. Development of CdWO4 crystal scintillators from enriched isotopes for 2γ-decay experiments

Author

Barabash, A.S., primary, Belli, P., additional, Bernabei, R., additional, BoikO, R.S., additional, Brudanin, V.B., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Chernyak, D.M., additional, Danevich, F.A., additional, d'Angelo, S., additional, Degoda, V.Ya., additional, Di Vacri, M.L., additional, Dossovitskiy, A.E., additional, Galashov, E.N., additional, Incicchitti, A., additional, Kobychev, V.V., additional, Konovalov, S.I., additional, Kovtun, G.P., additional, Laubenstein, M., additional, Mikhlin, A.L., additional, Mokina, V.M., additional, Nikolaiko, A.S., additional, Nisi, S., additional, Poda, D.V., additional, Podviyanuk, R.B., additional, Polischuk, O.G., additional, Shcherban, A.P., additional, Shlegel, V.N., additional, Solopikhin, D.A., additional, Tretyak, V.I., additional, Umatov, V.I., additional, Vasiliev, Ya.V., additional, and Virich, V.D., additional

Published
2012
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41. RESULTS FROM DAMA/LIBRA

Author

BERNABEI, R., primary, BELLI, P., additional, MONTECCHIA, F., additional, NOZZOLI, F., additional, CAPPELLA, F., additional, d'ANGELO, A., additional, INCICCHITTI, A., additional, PROSPERI, D., additional, CERULLI, R., additional, DAI, C.J., additional, HE, H.L., additional, MA, X.H., additional, SHENG, X.D., additional, YE, Z.P., additional, and WANG, R.G., additional

Published
2011
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42. SIGNALS FROM THE DARK UNIVERSE: NEW RESULTS FROM DAMA/LIBRA

Author

BERNABEI, R., primary, BELLI, P., additional, MONTECCHIA, F., additional, NOZZOLI, F., additional, CAPPELLA, F., additional, d'ANGELO, A., additional, INCICCHITTI, A., additional, PROSPERI, D., additional, CERULLI, R., additional, DAI, C.J., additional, HE, H.L., additional, KUANG, H.H., additional, MA, X.H., additional, SHENG, X.D., additional, WANG, R.G., additional, and YE, Z.P., additional

Published
2011
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43. Double β experiments with the help of scintillation and HPGe detectors at Gran Sasso

Author

Barabash, A., primary, Belli, P., additional, Bernabei, R., additional, Boiko, R. S., additional, Brudanin, V. B., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Chernyak, D. M., additional, Danevich, F. A., additional, d'Angelo, S., additional, Di Marco, A., additional, Di Vacri, M. L., additional, Dossovitskiyj, A. E., additional, Galashov, E. N., additional, Grinyov, B. V., additional, Incicchitti, A., additional, Kobychev, V. V., additional, Konovalov, S. I., additional, Kovtun, G. P., additional, Kropivyansky, B. N., additional, Kudovbenko, V. M., additional, Laubenstein, M., additional, Mikhlin, A. L., additional, Nagornaya, L. L., additional, Nagorny, S. S., additional, Nagornyi, P. G., additional, Nisi, S., additional, Poda, D. V., additional, Podviyanuk, R. B., additional, Prosperi, D., additional, Polischuk, O. G., additional, Shcherban, A. P., additional, Shlegel, V. N., additional, Solopikhin, D. A., additional, Stenin, Y. G., additional, Suhonen, J., additional, Tolmachev, A. V., additional, Tretyak, V. I., additional, Umatov, V. I., additional, Vasiliev, Y. V., additional, Virich, V. D., additional, Vyshnevskyi, I. M., additional, Yavetskiy, R. P., additional, Yurchenko, S. S., additional, Civitarese, Osvaldo, additional, Stekl, Ivan, additional, and Suhonen, Jouni, additional

Published
2011
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44. Recent results from DAMA∕LIBRA and perspectives

Author

Bernabei, R., primary, Belli, P., additional, Di Marco, A., additional, Montecchia, F., additional, Cappella, F., additional, d'Angelo, A., additional, Incicchitti, A., additional, Prosperi, D., additional, Cerulli, R., additional, Dai, C. J., additional, He, H. L., additional, Ma, X. H., additional, Sheng, X. D., additional, Wang, R. G., additional, Ye, Z. P., additional, Civitarese, Osvaldo, additional, Stekl, Ivan, additional, and Suhonen, Jouni, additional

Published
2011
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45. SEARCHING FOR PROCESSES VIOLATING THE PAULI EXCLUSION PRINCIPLE IN Na AND I WITH DAMA/LIBRA

Author

Bernabei, R., primary, Belli, P., additional, Montecchia, F., additional, Nozzoli, F., additional, Cappella, F., additional, d'Angelo, A., additional, Incicchitti, A., additional, Prosperi, D., additional, Cerulli, R., additional, Dai, C.J., additional, He, H.L., additional, Kuang, H.H., additional, Ma, X.H., additional, Sheng, X.D., additional, and Ye, Z.P., additional

Published
2010
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46. DAMA/LIBRA RESULTS

Author

Bernabei, R., primary, Belli, P., additional, Montecchia, F., additional, Nozzoli, F., additional, Cappella, F., additional, d'Angelo, A., additional, Incicchitti, A., additional, Prosperi, D., additional, Cerulli, R., additional, Dai, C.J., additional, He, H.L., additional, Kuang, H.H., additional, Ma, X.H., additional, Sheng, X.D., additional, Wang, R.G., additional, and Ye, Z.P., additional

Published
2010
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47. DIRECT DETECTION OF DARK MATTER PARTICLES

Author

BERNABEI, R., primary, BELLI, P., additional, MONTECCHIA, F., additional, NOZZOLI, F., additional, CAPPELLA, F., additional, d'ANGELO, A., additional, INCICCHITTI, A., additional, PROSPERI, D., additional, CERULLI, R., additional, DAI, C. J., additional, HE, H. L., additional, KUANG, H. H., additional, Ma, X. H., additional, SHENG, X. D., additional, and YE, Z. P., additional

Published
2010
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48. Particle Dark Matter in the galactic halo: results from DAMA∕LIBRA

Author

Bernabei, R., primary, Belli, P., additional, Montecchia, F., additional, Nozzoli, F., additional, Cappella, F., additional, d’Angelo, A., additional, Incicchitti, A., additional, Presperi, D., additional, Cerulli, R., additional, Dai, C. J., additional, He, H. L., additional, Kuang, H. H., additional, Ma, X. H., additional, Sheng, X. D., additional, Ye, Z. P., additional, Alverson, George, additional, Nath, Pran, additional, and Nelson, Brent, additional

Published
2010
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49. First Results of the Experiment to Search for 2β Decay of [sup 106]Cd with the Help of [sup 106]CdWO[sub 4] Crystal Scintillators

Author

Belli, P., primary, Bernabei, R., additional, Boiko, R. S., additional, Brudanin, V. B., additional, Cappella, F., additional, Caracciolo, V., additional, Cerulli, R., additional, Chernyak, D. M., additional, Danevich, F. A., additional, d’Angelo, S., additional, Dossovitskiy, A. E., additional, Galashov, E. N., additional, Incicchitti, A., additional, Kobychev, V. V., additional, Nagorny, S. S., additional, Nozzoli, F., additional, Kropivyansky, B. N., additional, Kudovbenko, V. M., additional, Mikhlin, A. L., additional, Nikolaiko, A. S., additional, Poda, D. V., additional, Podviyanuk, R. B., additional, Polischuk, O. G., additional, Prosperi, D., additional, Shlegel, V. N., additional, Stenin, Yu. G., additional, Suhonen, J., additional, Tretyak, V. I., additional, Vasiliev, Ya. V., additional, Trache, Livius, additional, Smirnov, Alexei, additional, and Stoica, Sabin, additional

Published
2010
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50. Particle Dark Matter and DAMA∕LIBRA

Author

Bernabei, R., primary, Belli, P., additional, Cappella, F., additional, Cerulli, R., additional, Dai, C. J., additional, d’Angelo, A., additional, He, H. L., additional, Incicchitti, A., additional, Ma, X. H., additional, Montecchia, F., additional, Nozzoli, F., additional, Prosperi, D., additional, Sheng, X. D., additional, Wang, R. G., additional, Ye, Z. P., additional, Cecchi, Claudia, additional, Ciprini, Stefano, additional, Lubrano, Pasquale, additional, and Tosti, Gino, additional

Published
2010
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