skip to main content

DOE PAGESDOE PAGES

Title: Double-beta decay investigation with highly pure enriched $$^{82}$$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 82Se. The matrix which embeds the source is an array of ZnSe crystals, where enriched 82Se 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 82Se 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 232Th, 238U and 235U are respectively: <61, <110 and <74 μBq/kg at 90 % C.L. The extremely low-background conditions in which the measurement was carried out and the high radiopurity of the 82Se allowed us to establish the most stringent lower limits on the half-lives of the double-beta decay of 82Se to 0+1, 2+2 and 2+1 excited states of 82Kr of 3.4•10 22, 1.3•10 22 and 1.0•10 22 y, respectively, with a 90 % C.L.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ;  [5] ;  [6] ;  [7] ;  [2] ;  [5] ;  [8] ;  [9] ;  [10] ;  [5] ;  [11] ;  [10] ;  [12] ;  [6] ;  [11] more »;  [10] ;  [9] ;  [2] ;  [10] ;  [9] ;  [9] ;  [10] ;  [6] ;  [6] « less
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Sapienza Univ. di Roma, Rome (Italy); INFN, Rome (Italy)
  3. Univ. di Pavia, Pavia (Italy); INFN, Pavia (Italy)
  4. Sapienza Univ. di Roma, Rome (Italy); Princeton Univ., Princeton, NJ (United States)
  5. Univ. di Milano-Bicocca, Milan (Italy); INFN, Milan (Italy)
  6. INFN, Rome (Italy)
  7. INFN, Genoa (Italy); Univ. di Genova, Genoa (Italy)
  8. Centre de Spectrometrie de Masse, Orsay (France)
  9. INFN, Milan (Italy)
  10. INFN, Assergi (L'Aquila) (Italy)
  11. Gran Sasso Science Institute, L'Aquila (Italy)
  12. CEA, Gif-sur-Yvette (France)
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 75; Journal Issue: 12; Journal ID: ISSN 1434-6044
Publisher:
Springer
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
OSTI Identifier:
1405288

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, Luca, Pessina, G., Piperno, G., Pirro, S., Previtali, E., Rusconi, C., Schaffner, K., Tomei, C., and Vignati, M.. Double-beta decay investigation with highly pure enriched $^{82}$Se for the LUCIFER experiment. United States: N. p., Web. doi:10.1140/epjc/s10052-015-3822-x.
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, Luca, Pessina, G., Piperno, G., Pirro, S., Previtali, E., Rusconi, C., Schaffner, K., Tomei, C., & Vignati, M.. Double-beta decay investigation with highly pure enriched $^{82}$Se for the LUCIFER experiment. United States. doi:10.1140/epjc/s10052-015-3822-x.
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, Luca, Pessina, G., Piperno, G., Pirro, S., Previtali, E., Rusconi, C., Schaffner, K., Tomei, C., and Vignati, M.. 2015. "Double-beta decay investigation with highly pure enriched $^{82}$Se for the LUCIFER experiment". United States. doi:10.1140/epjc/s10052-015-3822-x. https://www.osti.gov/servlets/purl/1405288.
@article{osti_1405288,
title = {Double-beta decay investigation with highly pure enriched $^{82}$Se for the LUCIFER experiment},
author = {Beeman, J. W. and Bellini, F. and Benetti, P. and Cardani, L. and Casali, N. and Chiesa, D. and Clemenza, M. and Dafinei, I. and Domizio, S. Di and Ferroni, F. and Gironi, L. and Giuliani, A. and Gotti, C. and Laubenstein, M. and Maino, M. and Nagorny, S. and Nisi, S. and Nones, C. and Orio, F. and Pagnanini, L. and Pattavina, Luca and Pessina, G. and Piperno, G. and Pirro, S. and Previtali, E. and Rusconi, C. and Schaffner, K. and Tomei, C. and Vignati, M.},
abstractNote = {The LUCIFER project aims at deploying the first array of enriched scintillating bolometers for the investigation of neutrinoless double-beta decay of 82Se. The matrix which embeds the source is an array of ZnSe crystals, where enriched 82Se 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 82Se 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 232Th, 238U and 235U are respectively: <61, <110 and <74 μBq/kg at 90 % C.L. The extremely low-background conditions in which the measurement was carried out and the high radiopurity of the 82Se allowed us to establish the most stringent lower limits on the half-lives of the double-beta decay of 82Se to 0+1, 2+2 and 2+1 excited states of 82Kr of 3.4•1022, 1.3•1022 and 1.0•1022 y, respectively, with a 90 % C.L.},
doi = {10.1140/epjc/s10052-015-3822-x},
journal = {European Physical Journal. C, Particles and Fields},
number = 12,
volume = 75,
place = {United States},
year = {2015},
month = {12}
}