For the first time ancient Roman lead was used to grow a crystal of PbWO4, and this crystal has subsequently been used as a cryogenic particle detector. The new device provides independent readout of heat and scintillation light and is able to discriminate between β/γ interactions and alpha interactions down to few keV. Stringent limits on the α decays of the lead isotopes are presented. In particular a limit of T1/2 > 1.4 · 1020 y at a 90% C.L. was evaluated for the α decay of 204Pb to 200Hg. © Società Italiana di Fisica/Springer-Verlag 2013.
Beeman, J., Bellini, F., Cardani, L., Casali, N., Di Domizio, S., Fiorini, E., et al. (2013). New experimental limits on the α decays of lead isotopes. THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI, 49(4), 1-7 [10.1140/epja/i2013-13050-7].
New experimental limits on the α decays of lead isotopes
FIORINI, ETTORE;GIRONI, LUCA;PATTAVINA, LUCA MARIA
;Pessina, G;Previtali, E;
2013
Abstract
For the first time ancient Roman lead was used to grow a crystal of PbWO4, and this crystal has subsequently been used as a cryogenic particle detector. The new device provides independent readout of heat and scintillation light and is able to discriminate between β/γ interactions and alpha interactions down to few keV. Stringent limits on the α decays of the lead isotopes are presented. In particular a limit of T1/2 > 1.4 · 1020 y at a 90% C.L. was evaluated for the α decay of 204Pb to 200Hg. © Società Italiana di Fisica/Springer-Verlag 2013.
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