Towards 14C-free liquid scintillator
- Enqvist, T.
- Barabanov, I. R.
- Bezrukov, L. B.
- Gangapshev, A. M.
- Gavrilyuk, Y. M.
- Grishina, V. Yu.
- Gurentsov, V. I.
- Hissa, J.
- Joutsenvaara, J.
- Kazalov, V. V.
- Krokhaleva, S.
- Kutuniva, J.
- Kuusiniemi, P.
- Kuzminov, V. V.
- Kurlovich, A. S.
- Loo, Kai
- Lubsandorzhiev, B. K.
- Lubsandorzhiev, S.
- Morgalyuk, V. P.
- Novikova, G. Y.
- Pshukov, A. M.
- Sinev, V. V.
- Slupecki, Maciej
- Trzaska, Wladyslaw
- Umerov, Sh. I.
- Veresnikova, A. V.
- Virkaj arvi, A.
- Yanovich, Y. A.
- Zavarzina, V. P.
DOIAbstract
A series of measurements has been started where the 14C concentration is determined from several liquid scintillator samples. A dedicated setup has been designed and constructed with the aim of measuring concentrations smaller than 10−18. Measurements take place in two underground laboratories: in the Baksan Neutrino Observatory, Russia, and in the new Callio Lab in the Pyhäsalmi mine, Finland. Low-energy neutrino detection with a liquid scintillator requires that the intrinsic 14C concentration in the liquid is extremely low. In the Borexino CTF detector the concentration of 2 × 10−18 has been achieved being the lowest value ever measured. In principle, the older the oil or gas source that the liquid scintillator is derived from and the...
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