Lifetimes of (214)Po and (212)Po measured with Counting Test Facility at Gran Sasso National Laboratory

L Miramonti; G Bellini; J Benziger; D Bick; G Bonfini; D Bravo; M Buizza Avanzini; B Caccianiga; L Cadonati; F Calaprice; C Carraro; P Cavalcante; A Chavarria; V Chubakov; D D'Angelo; S Davini; A Derbin; A Etenko; K Fomenko; D Franco; C Galbiati; S Gazzana; C Ghiano; M Giammarchi; M Göger-Neff; A Goretti; L Grandi; E Guardincerri; S Hardy; Aldo Ianni; Andrea Ianni; V Kobychev; D Korablev; G Korga; Y Koshio; D Kryn; M Laubenstein; T Lewke; M Lissia; E Litvinovich; B Loer; F Lombardi; P Lombardi; L Ludhova; I Machulin; S Manecki; W Maneschg; F Mantovani; G Manuzio; Q Meindl; E Meroni; M Misiaszek; D Montanari; P Mosteiro; V Muratova; S Nisi; L Oberauer; M Obolensky; F Ortica; K Otis; M Pallavicini; L Papp; L Perasso; S Perasso; A Pocar; G Ranucci; A Razeto; A Re; A Romani; N Rossi; A Sabelnikov; R Saldanha; C Salvo; S Schönert; H Simgen; M Skorokhvatov; O Smirnov; A Sotnikov; S Sukhotin; Y Suvorov; R Tartaglia; G Testera; D Vignaud; R B Vogelaar; F von Feilitzsch; J Winter; M Wojcik; A Wright; M Wurm; G Xhixha; J Xu; O Zaimidoroga; S Zavatarelli; G Zuzel; Borexino Collaboration

doi:10.1016/j.jenvrad.2014.02.025

Lifetimes of (214)Po and (212)Po measured with Counting Test Facility at Gran Sasso National Laboratory

J Environ Radioact. 2014 Dec:138:444-6. doi: 10.1016/j.jenvrad.2014.02.025. Epub 2014 Apr 13.

Authors

L Miramonti¹, G Bellini¹, J Benziger², D Bick³, G Bonfini⁴, D Bravo⁵, M Buizza Avanzini¹, B Caccianiga¹, L Cadonati⁶, F Calaprice⁷, C Carraro⁸, P Cavalcante⁴, A Chavarria⁷, V Chubakov⁹, D D'Angelo¹, S Davini⁸, A Derbin¹⁰, A Etenko¹¹, K Fomenko¹², D Franco¹³, C Galbiati⁷, S Gazzana⁴, C Ghiano⁴, M Giammarchi¹, M Göger-Neff¹⁴, A Goretti⁷, L Grandi⁷, E Guardincerri⁸, S Hardy⁵, Aldo Ianni⁴, Andrea Ianni⁷, V Kobychev¹⁵, D Korablev¹⁶, G Korga⁴, Y Koshio⁴, D Kryn¹³, M Laubenstein⁴, T Lewke¹⁴, M Lissia¹⁷, E Litvinovich¹¹, B Loer⁷, F Lombardi⁴, P Lombardi¹, L Ludhova¹, I Machulin¹¹, S Manecki⁵, W Maneschg¹⁸, F Mantovani¹⁹, G Manuzio⁸, Q Meindl¹⁴, E Meroni¹, M Misiaszek²⁰, D Montanari²¹, P Mosteiro⁷, V Muratova¹⁰, S Nisi⁴, L Oberauer¹⁴, M Obolensky¹³, F Ortica²², K Otis⁶, M Pallavicini⁸, L Papp²³, L Perasso¹, S Perasso⁸, A Pocar⁶, G Ranucci¹, A Razeto⁴, A Re¹, A Romani²², N Rossi⁴, A Sabelnikov¹¹, R Saldanha⁷, C Salvo⁸, S Schönert²⁴, H Simgen¹⁸, M Skorokhvatov¹¹, O Smirnov¹⁶, A Sotnikov¹⁶, S Sukhotin¹¹, Y Suvorov²⁵, R Tartaglia⁴, G Testera⁸, D Vignaud¹³, R B Vogelaar⁵, F von Feilitzsch¹⁴, J Winter¹⁴, M Wojcik²⁰, A Wright⁷, M Wurm¹⁴, G Xhixha⁹, J Xu⁷, O Zaimidoroga¹⁶, S Zavatarelli⁸, G Zuzel²⁶; Borexino Collaboration

Affiliations

¹ Dipartimento di Fisica, Università degli Studi e INFN, Milano 20133, Italy.
² Chemical Engineering Department, Princeton University, Princeton, NJ 08544, USA.
³ Institut für Experimentalphysik, Universität Hamburg, Germany.
⁴ INFN Laboratori Nazionali del Gran Sasso, Assergi 67010, Italy.
⁵ Physics Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
⁶ Physics Department, University of Massachusetts, Amherst, MA 01003, USA.
⁷ Physics Department, Princeton University, Princeton, NJ 08544, USA.
⁸ Dipartimento di Fisica, Università e INFN, Genova 16146, Italy.
⁹ Dipartimento di Fisica, Università di Ferrara and INFN Ferrara, 44100 Ferrara, Italy.
¹⁰ St. Petersburg Nuclear Physics Institute, Gatchina 188350, Russia.
¹¹ NRC Kurchatov Institute, Moscow 123182, Russia.
¹² INFN Laboratori Nazionali del Gran Sasso, Assergi 67010, Italy; Joint Institute for Nuclear Research, Dubna 141980, Russia.
¹³ Laboratoire AstroParticule et Cosmologie, 75231 Paris Cedex 13, France.
¹⁴ Physik Department, Technische Universität München, Garching 85747, Germany.
¹⁵ Kiev Institute for Nuclear Research, Kiev 06380, Ukraine.
¹⁶ Joint Institute for Nuclear Research, Dubna 141980, Russia.
¹⁷ Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari, I-09042 Monserrato, Italy.
¹⁸ Max-Plank-Institut für Kernphysik, Heidelberg 69029, Germany.
¹⁹ Dipartimento di Fisica, Università di Ferrara and INFN Ferrara, 44100 Ferrara, Italy. Electronic address: [email protected].
²⁰ M. Smoluchowski Institute of Physics, Jagellonian University, Krakow, 30059, Poland.
²¹ INFN Laboratori Nazionali del Gran Sasso, Assergi 67010, Italy; Physics Department, Princeton University, Princeton, NJ 08544, USA.
²² Dipartimento di Chimica, Università e INFN, Perugia 06123, Italy.
²³ INFN Laboratori Nazionali del Gran Sasso, Assergi 67010, Italy; Physics Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
²⁴ Physik Department, Technische Universität München, Garching 85747, Germany; Max-Plank-Institut für Kernphysik, Heidelberg 69029, Germany.
²⁵ INFN Laboratori Nazionali del Gran Sasso, Assergi 67010, Italy; NRC Kurchatov Institute, Moscow 123182, Russia.
²⁶ Max-Plank-Institut für Kernphysik, Heidelberg 69029, Germany; M. Smoluchowski Institute of Physics, Jagellonian University, Krakow, 30059, Poland.

PMID: 24725806
DOI: 10.1016/j.jenvrad.2014.02.025

Abstract

The decays of (214)Po into (210)Pb and of (212)Po into (208)Pb tagged by the previous decays from (214)Bi and (212)Bi have been studied inserting quartz vials inside the Counting Test Facility (CTF) at the underground laboratory in Gran Sasso (LNGS). We find that the mean lifetime of (214)Po is (236.00 ± 0.42(stat) ± 0.15(syst)) μs and that of (212)Po is (425.1 ± 0.9(stat) ± 1.2(syst)) ns. Our results are compatible with previous measurements, have a much better signal to background ratio, and reduce the overall uncertainties.

Keywords: Alfa-decay lifetime; Bi–Po coincidence; Natural radioactivity; Po-212; Po-214.

MeSH terms

Alpha Particles
Half-Life
Laboratories
Lead Radioisotopes / analysis*
Polonium / analysis*
Radiation Monitoring
Radioactive Pollutants / analysis*

Substances

Lead Radioisotopes
Radioactive Pollutants
Polonium