Double-beta decay investigation with highly pure enriched [Formula: see text] Se for the LUCIFER experiment

The LUCIFER project aims at deploying the first array of enriched scintillating bolometers for the investigation of neutrinoless double-beta decay of [Formula: see text] Se. The matrix which embeds the source is an array of ZnSe crystals, where enriched [Formula: see text] Se is used as decay isotop...

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Autores principales: Beeman, J. W., Bellini, F., Benetti, P., Cardani, L., Casali, N., Chiesa, D., Clemenza, M., Dafinei, I., Domizio, S. Di, Ferroni, F., Gironi, L., Giuliani, A., Gotti, C., Laubenstein, M., Maino, M., Nagorny, S., Nisi, S., Nones, C., Orio, F., Pagnanini, L., Pattavina, L., Pessina, G., Piperno, G., Pirro, S., Previtali, E., Rusconi, C., Schäffner, K., Tomei, C., Vignati, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4681472/
https://www.ncbi.nlm.nih.gov/pubmed/26705394
http://dx.doi.org/10.1140/epjc/s10052-015-3822-x
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author Beeman, J. W.
Bellini, F.
Benetti, P.
Cardani, L.
Casali, N.
Chiesa, D.
Clemenza, M.
Dafinei, I.
Domizio, S. Di
Ferroni, F.
Gironi, L.
Giuliani, A.
Gotti, C.
Laubenstein, M.
Maino, M.
Nagorny, S.
Nisi, S.
Nones, C.
Orio, F.
Pagnanini, L.
Pattavina, L.
Pessina, G.
Piperno, G.
Pirro, S.
Previtali, E.
Rusconi, C.
Schäffner, K.
Tomei, C.
Vignati, M.
author_facet Beeman, J. W.
Bellini, F.
Benetti, P.
Cardani, L.
Casali, N.
Chiesa, D.
Clemenza, M.
Dafinei, I.
Domizio, S. Di
Ferroni, F.
Gironi, L.
Giuliani, A.
Gotti, C.
Laubenstein, M.
Maino, M.
Nagorny, S.
Nisi, S.
Nones, C.
Orio, F.
Pagnanini, L.
Pattavina, L.
Pessina, G.
Piperno, G.
Pirro, S.
Previtali, E.
Rusconi, C.
Schäffner, K.
Tomei, C.
Vignati, M.
author_sort Beeman, J. W.
collection PubMed
description The LUCIFER project aims at deploying the first array of enriched scintillating bolometers for the investigation of neutrinoless double-beta decay of [Formula: see text] Se. The matrix which embeds the source is an array of ZnSe crystals, where enriched [Formula: see text] Se is used as decay isotope. The radiopurity of the initial components employed for manufacturing crystals, that can be operated as bolometers, is crucial for achieving a null background level in the region of interest for double-beta decay investigations. In this work, we evaluated the radioactive content in 2.5 kg of 96.3 % enriched [Formula: see text] Se metal, measured with a high-purity germanium detector at the Gran Sasso deep underground laboratory. The limits on internal contaminations of primordial decay chain elements of [Formula: see text] Th, [Formula: see text] U and [Formula: see text] U are respectively: [Formula: see text] 61, [Formula: see text] 110 and [Formula: see text] 74 [Formula: see text] Bq/kg at 90 % C.L. The extremely low-background conditions in which the measurement was carried out and the high radiopurity of the [Formula: see text] Se allowed us to establish the most stringent lower limits on the half-lives of the double-beta decay of [Formula: see text] Se to 0[Formula: see text] , 2[Formula: see text] and 2[Formula: see text] excited states of [Formula: see text] Kr of 3.4[Formula: see text] 10[Formula: see text] , 1.3[Formula: see text] 10[Formula: see text] and 1.0[Formula: see text] 10[Formula: see text]  y, respectively, with a 90 % C.L.
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spelling pubmed-46814722015-12-22 Double-beta decay investigation with highly pure enriched [Formula: see text] Se for the LUCIFER experiment Beeman, J. W. Bellini, F. Benetti, P. Cardani, L. Casali, N. Chiesa, D. Clemenza, M. Dafinei, I. Domizio, S. Di Ferroni, F. Gironi, L. Giuliani, A. Gotti, C. Laubenstein, M. Maino, M. Nagorny, S. Nisi, S. Nones, C. Orio, F. Pagnanini, L. Pattavina, L. Pessina, G. Piperno, G. Pirro, S. Previtali, E. Rusconi, C. Schäffner, K. Tomei, C. Vignati, M. Eur Phys J C Part Fields Regular Article - Experimental Physics The LUCIFER project aims at deploying the first array of enriched scintillating bolometers for the investigation of neutrinoless double-beta decay of [Formula: see text] Se. The matrix which embeds the source is an array of ZnSe crystals, where enriched [Formula: see text] Se is used as decay isotope. The radiopurity of the initial components employed for manufacturing crystals, that can be operated as bolometers, is crucial for achieving a null background level in the region of interest for double-beta decay investigations. In this work, we evaluated the radioactive content in 2.5 kg of 96.3 % enriched [Formula: see text] Se metal, measured with a high-purity germanium detector at the Gran Sasso deep underground laboratory. The limits on internal contaminations of primordial decay chain elements of [Formula: see text] Th, [Formula: see text] U and [Formula: see text] U are respectively: [Formula: see text] 61, [Formula: see text] 110 and [Formula: see text] 74 [Formula: see text] Bq/kg at 90 % C.L. The extremely low-background conditions in which the measurement was carried out and the high radiopurity of the [Formula: see text] Se allowed us to establish the most stringent lower limits on the half-lives of the double-beta decay of [Formula: see text] Se to 0[Formula: see text] , 2[Formula: see text] and 2[Formula: see text] excited states of [Formula: see text] Kr of 3.4[Formula: see text] 10[Formula: see text] , 1.3[Formula: see text] 10[Formula: see text] and 1.0[Formula: see text] 10[Formula: see text]  y, respectively, with a 90 % C.L. Springer Berlin Heidelberg 2015-12-13 2015 /pmc/articles/PMC4681472/ /pubmed/26705394 http://dx.doi.org/10.1140/epjc/s10052-015-3822-x Text en © The Author(s) 2015 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3.
spellingShingle Regular Article - Experimental Physics
Beeman, J. W.
Bellini, F.
Benetti, P.
Cardani, L.
Casali, N.
Chiesa, D.
Clemenza, M.
Dafinei, I.
Domizio, S. Di
Ferroni, F.
Gironi, L.
Giuliani, A.
Gotti, C.
Laubenstein, M.
Maino, M.
Nagorny, S.
Nisi, S.
Nones, C.
Orio, F.
Pagnanini, L.
Pattavina, L.
Pessina, G.
Piperno, G.
Pirro, S.
Previtali, E.
Rusconi, C.
Schäffner, K.
Tomei, C.
Vignati, M.
Double-beta decay investigation with highly pure enriched [Formula: see text] Se for the LUCIFER experiment
title Double-beta decay investigation with highly pure enriched [Formula: see text] Se for the LUCIFER experiment
title_full Double-beta decay investigation with highly pure enriched [Formula: see text] Se for the LUCIFER experiment
title_fullStr Double-beta decay investigation with highly pure enriched [Formula: see text] Se for the LUCIFER experiment
title_full_unstemmed Double-beta decay investigation with highly pure enriched [Formula: see text] Se for the LUCIFER experiment
title_short Double-beta decay investigation with highly pure enriched [Formula: see text] Se for the LUCIFER experiment
title_sort double-beta decay investigation with highly pure enriched [formula: see text] se for the lucifer experiment
topic Regular Article - Experimental Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4681472/
https://www.ncbi.nlm.nih.gov/pubmed/26705394
http://dx.doi.org/10.1140/epjc/s10052-015-3822-x
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