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

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

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phlb..422..349a&link_type=abstract

Physics Letters B, Vol. 422, No. 1 - 4, p. 349 - 358

Physics

28

Solar Neutrinos, Cosmic Rays: Detectors

Scientific paper

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.

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