Skip to main content

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

Abstract

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.

References

  1. G. Alimonti et al., Nucl. Instrum. Methods A 406, 411 (1998).

    ADS  Article  Google Scholar 

  2. Guy von Dardel, Phys. Rev. 79, 734 (1950).

    ADS  Article  Google Scholar 

  3. René Ballini, Ann. Phys. 8, 441 (1953).

    Google Scholar 

  4. K.W. Ovilvie, Proc. Phys. Soc. (London) 76, 299 (1960).

    ADS  Article  Google Scholar 

  5. T. Dobrowolski, J. Young, Proc. Phys. Soc. (London) 77, 1219 (1961).

    ADS  Article  Google Scholar 

  6. A. Erlik, J. Felsteiner, H. Lindenman, M. Tatcher, Nucl. Instrum. Methods 92, 45 (1971).

    ADS  Article  Google Scholar 

  7. J.W. Zhou et al., Nucl. Instrum. Methods Phys. Res. A 335, 443 (1993).

    ADS  Article  Google Scholar 

  8. E.N. Alexeyev, J.M. Gavriljuk, A.M. Gangapshev, A.M. Gezhaev, V.V. Kazalov, V. Kuzminov, S.P. Yakimenko, S.I. Panasenko et al., Astropart. Phys. 46, 23 (2013).

    ADS  Article  Google Scholar 

  9. S.-C. Wu, Nucl. Data Sheets 110, 681 (2009).

    ADS  Article  Google Scholar 

  10. V. Christé, M.M. Bé, 214Po - Comments on evaluation of decay data, Table de Radionucléides, LNE - LNHB/CEA (2007).

  11. D.E. Bunyan, A. Lundby, D. Walker, Proc. Phys. Soc. (London) A 62, 253 (1949).

    ADS  Article  Google Scholar 

  12. F.C. Flack, J.E. Johnson, Proc. Phys. Soc. (London) 79, 10 (1962).

    ADS  Article  Google Scholar 

  13. G. Astner, I. Bergstrom, L. Eriksson, U. Fagerquist, G. Holm, A. Persson, Nucl. Phys. 45, 49 (1963).

    Article  Google Scholar 

  14. G.W. McBeth, R.A. Winyard, Int. J. Appl. Radiat. Isot. 23, 527 (1972).

    Article  Google Scholar 

  15. S. Sanyal, R.K. Garg, S.D. Chauhan, S.L. Gupta, S. Pancholi, Phys. Rev. C 12, 318 (1975).

    ADS  Article  Google Scholar 

  16. H. Bohn, E. Endres, T. Faestermann, P. Kienle, Z. Phys. A 302, 51 (1981).

    ADS  Article  Google Scholar 

  17. E. Browne, Nucl. Data Sheets 104, 427 (2005).

    ADS  Article  Google Scholar 

  18. A.L. Nichols, 212Po - Comments on evaluation of decay data, Table de Radionuclé ides, LNE - LNHB/CEA (2010).

  19. Borexino Collaboration (G. Alimonti et al.), Astropart. Phys. 8, 141 (1998).

    ADS  Article  Google Scholar 

  20. G. Zuzel, H. Simgen, G. Heusser, Appl. Radiat. Isot. 61, 197 (2004).

    Article  Google Scholar 

  21. G. Fiorentini et al., Phys. Rev. C 81, 034602 (2010).

    ADS  Article  Google Scholar 

  22. Borexino Collaboration (G. Bellini et al.), Eur. Phys. J. C 54, 61 (2008).

    ADS  Article  Google Scholar 

  23. R. Peierls, Proc. R. Soc. A 149, 467 (1935).

    ADS  Article  Google Scholar 

  24. A.H. Jeffrey, Nucl. Instrum. Methods 81, 155 (1970).

    ADS  Article  Google Scholar 

  25. A.H. Jeffrey, Nucl. Instrum. Methods 81, 253 (1970).

    ADS  Article  Google Scholar 

  26. A. Ianni, P. Lombardi, G. Ranucci, O.Ju. Smirnov, Nucl. Instrum. Methods A 537, 683 (2005).

    ADS  Article  Google Scholar 

  27. Borexino Collaboration (P. Alvarez Sanchez et al.), Phys. Lett. B 716, 401 (2012).

    ADS  Article  Google Scholar 

  28. Guy von Dardel, Ark. Fys. 2, 337 (1951).

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Consortia

Corresponding author

Correspondence to Marcello Lissia.

Additional information

This article is published with open access at Springerlink.com

Communicated by E. Bellotti

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and Permissions

About this article

Cite this article

Borexino Collaboration., Bellini, G., Benziger, J. et al. Lifetime measurements of 214Po and 212Po with the CTF liquid scintillator detector at LNGS. Eur. Phys. J. A 49, 92 (2013). https://doi.org/10.1140/epja/i2013-13092-9

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1140/epja/i2013-13092-9

Keywords

  • Radon
  • Branch Ratio
  • Polonium
  • Gray Histogram
  • Extraction Chamber