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Measurement of the 14C abundance in a low-background liquid scintillator

  • G. Alimonti
  • , G. Angloher
  • , C. Arpesella
  • , M. Balata
  • , G. Bellini
  • , J. Benziger
  • , S. Bonetti
  • , L. Cadonati
  • , F. P. Calaprice
  • , G. Cecchet
  • , M. Chen
  • , N. Darnton
  • , A. De Bari
  • , M. Deutsch
  • , F. Elisei
  • , F. Von Feilitzsch
  • , C. Galbiati
  • , F. Gatti
  • , M. G. Giammarchi
  • , D. Giugni
  • T. Goldbrunner, A. Golubchikov, A. Goretti, T. Hagner, F. X. Hartmann, R. Von Hentig, G. Heusser, A. Ianni, J. Jochum, M. Johnson, M. Laubenstein, P. Lombardi, S. Magni, S. Malvezzi, I. Manno, G. Manuzio, F. Masetti, U. Mazzucato, E. Meroni, M. Neff, A. Nostro, L. Oberauer, A. Perotti, A. Preda, R. S. Raghavan, G. Ranucci, E. Resconi, M. Ruscitti, R. Scardaoni, S. Schönert, O. Smirnov, R. Tartaglia, G. Testera, P. Ullucci, R. B. Vogelaar, S. Vitale, O. Zaimidoroga

Research output: Contribution to journalArticlepeer-review

100 Scopus citations

Abstract

The 14C/12C ratio in 4.8 m3 of high-purity liquid scintillator was measured at (1.94 ± 0.09) × 10-18, the lowest 14C abundance ever measured. At this level the spectroscopy of low-energy solar neutrinos, in particular a measurement of the 7Be neutrino flux, will not be obstructed by the 14C β decay intrinsic to a liquid scintillator detector. A comprehensive study of the deviation of the shape of the 14C β spectrum from the allowed statistical shape reveals consistent results with recent observations and calculations. Possible origins of the 14C in the liquid scintillator are discussed.

Original languageEnglish
Pages (from-to)349-358
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume422
Issue number1-4
DOIs
StatePublished - 12 Mar 1998
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the Istituto Nazionale di Fisica Nucleare (INFN), Italy, the Bundesministerium für Bildung und Forschung (BMBF), Germany, the Deutsche Forschungsgemeinschaft (DFG), Germany, and by the National Science Foundation (NSF), USA.

Funding

This work was supported by the Istituto Nazionale di Fisica Nucleare (INFN), Italy, the Bundesministerium für Bildung und Forschung (BMBF), Germany, the Deutsche Forschungsgemeinschaft (DFG), Germany, and by the National Science Foundation (NSF), USA.

Funders
National Science Foundation
Deutsche Forschungsgemeinschaft
Bundesministerium für Bildung und Forschung
Instituto Nazionale di Fisica Nucleare

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