Production of Cs and Fr isotopes from a high-density UC targets with different grain dimensions

  • V. N. Panteleev
  • O. Alyakrinskiy
  • M. Barbui
  • A. E. Barzakh
  • D. V. Fedorov
  • V. S. Ivanov
  • G. Lhersonneau
  • K. A. Mezilev
  • P. L. Molkanov
  • F. V. Moroz
  • S. Yu. Orlov
  • L. Stroe
  • L. B. Tecchio
  • M. Tonezzer
  • Yu. M. Volkov
Regular Article - Experimental Physics

Abstract

A UC target material of 11.3±0.5 g/cm^3 uranium density with the grain size of 20 and 5μm manufactured in a form of pills by the method of powder metallurgy has been tested on-line within the temperature range of 1800-2100 °C . The mass of uranium exposed to the beam was 4-7g. The yields and release rates of Cs and Fr isotopes produced by fission and spallation reactions of 238U by 1GeV protons have been measured. The yields of Cs and Fr isotopes obtained from the tested target materials have been compared, including yields of very short-lived Fr isotopes with half-lives down to 1ms. Temperature-resistant materials (porous graphite and tantalum foil) have been used for the internal-container construction, which holds the UC target pills inside a tungsten external container heated by the resistant heating. The fastest release and the highest efficiency for short-lived isotopes have been obtained for the targets with the internal container manufactured from the tantalum foil. Results of on-line tests of a big mass target (730g of 5μm grain UC target material) have been discussed.

References

  1. 1.
    V.N. Panteleev et al., Nucl. Instrum. Methods B 240, 888 (2005).CrossRefADSGoogle Scholar
  2. 2.
    V.N. Panteleev et al., Eur. Phys. J. ST 150, 297 (2007).Google Scholar
  3. 3.
    A. Bracco, A. Pisent (Editors), SPES: Technical Design for an advanced exotic ion beam facility at LNL (LNL-INFN (Report) 181/02, Legnaro, 2002).Google Scholar
  4. 4.
    A.C.C. Villari, AIP Conf. Proc. 704, 234 (2004).CrossRefADSGoogle Scholar
  5. 5.
    V.N. Panteleev et al., Nucl. Instrum. Methods B 266, 4247 (2008).CrossRefADSGoogle Scholar
  6. 6.
    M. Bernas et al., Nucl. Phys. A 725, 213 (2003).CrossRefADSGoogle Scholar
  7. 7.
    H.L. Ravn et al., Nucl. Instrum. Methods 139, 267 (1976).CrossRefADSGoogle Scholar
  8. 8.
    A.A. Akhmonen, V.N. Panteleev, A.G. Polyakov, LNPI Preprint 935, Gatchina, 1984.Google Scholar
  9. 9.
    V.N. Panteleev et al., Rev. Sci. Instrum. 73, 738 (2002).CrossRefADSGoogle Scholar

Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • V. N. Panteleev
    • 1
  • O. Alyakrinskiy
    • 2
  • M. Barbui
    • 2
  • A. E. Barzakh
    • 1
  • D. V. Fedorov
    • 1
  • V. S. Ivanov
    • 1
  • G. Lhersonneau
    • 3
  • K. A. Mezilev
    • 1
  • P. L. Molkanov
    • 1
  • F. V. Moroz
    • 1
  • S. Yu. Orlov
    • 1
  • L. Stroe
    • 2
  • L. B. Tecchio
    • 2
  • M. Tonezzer
    • 2
  • Yu. M. Volkov
    • 1
  1. 1.Petersburg Nuclear Physics Institute RASGatchinaRussia
  2. 2.Laboratori Nationali di LegnaroLegnaro (Padova)Italy
  3. 3.GANILCaen Cedex 5France

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