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Lifetime measurements of 214Po and 212Po with the CTF liquid scintillator detector at LNGS

  • 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
  • , A. Chepurnov
  • , 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, Marcello Lissia, E. Litvinovich, B. Loer, F. Lombardi, P. Lombardi, L. Ludhova, I. Machulin, S. Manecki, W. Maneschg, G. Manuzio, Q. Meindl, E. Meroni, L. Miramonti, M. Misiaszek, D. Montanari, P. Mosteiro, F. Mantovani, 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, R. B. Vogelaar, F. von Feilitzsch, J. Winter, M. Wojcik, A. Wright, M. Wurm, G. Xhixha, J. Xu, O. Zaimidoroga, S. Zavatarelli, G. Zuzel
  • Sezione INFN di Milano
  • Princeton University
  • Universität Hamburg
  • Laboratori Nazionali del Gran Sasso
  • Virginia Polytechnic Institute and State University
  • UMass Amherst
  • Princeton University
  • Università di Milano-Bicocca
  • Moscow State University
  • University of Ferrara
  • Petersburg Nuclear Physics Institute (PNPI)
  • Kurchatov Institute
  • Joint Institute for Nuclear Research, Dubna
  • Laboratoire de Probabilités et Modèles Aléatoires
  • Technical University of Munich
  • Institute of Nuclear Research, National Academy of Sciences in Ukraine
  • Sezione INFN di Cagliari
  • Max-Planck-Institut für Kernphysik
  • Jagiellonian University
  • Fermi National Accelerator Laboratory
  • INFN Sezione di Perugia

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

We have studied the α-decays of 214Po into 210Pb and of 212Po into 208Pb tagged by the coincidence with the preceding β-decays from 214Bi and 212Bi, respectively. The 222Rn, 232Th, and 220Rn sources used were sealed inside quartz vials and inserted in the Counting Test Facility at the underground Gran Sasso National Laboratory in Italy. We find that the mean lifetime of 214Po is (236.00 ± 0.42(stat) ± 0.15(syst)) μs and that of 212Po is (425.1 ± 0.9(stat) ± 1.2(syst)) ns. Our results, obtained from data with signal-to-background ratio larger than 1000, reduce the overall uncertainties and are compatible with previous measurements.

langue originaleAnglais
Numéro d'article92
Pages (de - à)1-8
Nombre de pages8
journalEuropean Physical Journal A
Volume49
Numéro de publication7
Les DOIs
étatPublié - 1 janv. 2013
Modification externeOui

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