Search for a decay of naturally occurring tungsten isotopes
Georgadze A. Sh., Danevich F. A. , Zdesenko Yu. G., Kobychev V. V. , Kropivyanskii B. N., Kuts V. N., Muzalevskii V. V., Nikolaiko A. S. , Ponkratenko O. A. , Tretyak V. I.
An experiment has been carried out at the Solotvin underground laboratory with cadmium tungstenate and zinc tungstenate scintillation crystals. The results put a lower limit of 1017-1019 yr on the lifetime of naturally occurring tungsten isotopes with respect to a decay. © 1995