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

G. Alimonti, G. Angloher, C. Arpesella, M. Balata, G. Bellini, Jay Burton Benziger, S. Bonetti, L. Cadonati, Frank Calaprice, G. Cecchet, M. Chen, N. Darnton, A. De Bari, M. Deutsch, F. Elisei, F. Von Feilitzsch, Cristiano Galbiati, F. Gatti, M. G. Giammarchi, D. GiugniT. 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

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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 (US)
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 - Mar 12 1998

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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