A detector containing two radiopure 116CdWO4 crystal scintillators with total mass of 1.2 kg was operated during 35324 h at the Gran Sasso Underground Laboratory (INFN, Italy) with the main aim to investigate double beta decay of 116Cd. As a by-product of the experiment, a new upper limit on atomic abundance of hypothetical naturally occurring long-lived seaborgium (eka-tungsten, Z = 106) in tungsten was set at 5.1 10−15 atom(Sg)/atom(W) with 90% C.L. (assuming the Sg half-life of 109 yr) by the analysis of the alpha decay events. This limit is better than those obtained with a ZnWO4 scintillator and in other types of experiments which used the accelerator mass spectrometry or searched for spontaneous fission of superheavy elements.

Belli, P., Bernabei, R., F Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F.a., et al. (2022). Search for naturally occurring seaborgium with radiopure 116CdWO4 crystal scintillators. PHYSICA SCRIPTA, 97(8) [10.1088/1402-4896/ac7a6d].

Search for naturally occurring seaborgium with radiopure 116CdWO4 crystal scintillators

Bernabei R;V Caracciolo V;
2022

Abstract

A detector containing two radiopure 116CdWO4 crystal scintillators with total mass of 1.2 kg was operated during 35324 h at the Gran Sasso Underground Laboratory (INFN, Italy) with the main aim to investigate double beta decay of 116Cd. As a by-product of the experiment, a new upper limit on atomic abundance of hypothetical naturally occurring long-lived seaborgium (eka-tungsten, Z = 106) in tungsten was set at 5.1 10−15 atom(Sg)/atom(W) with 90% C.L. (assuming the Sg half-life of 109 yr) by the analysis of the alpha decay events. This limit is better than those obtained with a ZnWO4 scintillator and in other types of experiments which used the accelerator mass spectrometry or searched for spontaneous fission of superheavy elements.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04
English
Con Impact Factor ISI
Seaborgium; 116CdWO4; underground physics
Belli, P., Bernabei, R., F Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F.a., et al. (2022). Search for naturally occurring seaborgium with radiopure 116CdWO4 crystal scintillators. PHYSICA SCRIPTA, 97(8) [10.1088/1402-4896/ac7a6d].
Belli, P; Bernabei, R; F Cappella, F; Caracciolo, V; Cerulli, R; Danevich, Fa; Incicchitti, A; Kasperovych, Dv; Kobychev, Vv; Laubenstein, M; Poda, Dv; Polischuk, Og; Sokur, Nv; Tretyak, Vi
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/303394
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