E-viri
Recenzirano
Odprti dostop
-
Calaprice, F.; Copello, S.; Dafinei, I.; D’Angelo, D.; D’Imperio, G.; Di Carlo, G.; Diemoz, M.; Di Giacinto, A.; Di Ludovico, A.; Ianni, A.; Iannone, M.; Marchegiani, F.; Mariani, A.; Milana, S.; Nisi, S.; Nuti, F.; Orlandi, D.; Pettinacci, V.; Pietrofaccia, L.; Rahatlou, S.; Souza, M.; Suerfu, B.; Tomei, C.; Vignoli, C.; Wada, M.; Zani, A.
Physical review. D, 07/2021, Letnik: 104, Številka: 2Journal Article
We present new results on the radiopurity of a 3.4-kg NaI(Tl) crystal scintillator operated in the SABRE proof-of-principle detector setup. The amount of potassium contamination, determined by the direct counting of radioactive 40K, is found to be 2.2 ± 1.5 ppb , lowest ever achieved for NaI(Tl) crystals. With the active veto, the average background rate in the crystal in the 1–6 keV energy region of interest (ROI) is 1.20 ± 0.05 counts / day / kg / keV , which is a breakthrough since the DAMA/LIBRA experiment. Our background model indicates that the rate is dominated by 210Pb and that about half of this contamination is located in the polytetrafluoroethylene reflector. We discuss ongoing developments of the crystal manufacture aimed at the further reduction of the background, including data from purification by zone refining. A projected background rate lower than ∼ 0.2 counts / day / kg / keV in the ROI is within reach. These results represent a benchmark for the development of next-generation NaI(Tl) detector arrays for the direct detection of dark matter particles.
Avtor
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.