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Journal of Radioanalytical and Nuclear Chemistry

, Volume 290, Issue 3, pp 551–555 | Cite as

Activity determination without tracers in high-resolution alpha-particle spectrometry

  • Roy Pöllänen
  • Teemu Siiskonen
  • Sakari Ihantola
  • Harri Toivonen
  • Andreas Pelikan
  • Kenneth Inn
  • Jerome La Rosa
  • Balazs Bene
Article

Abstract

High-resolution alpha spectrometry was applied for the activity determination of 10 reference sources containing different amounts of 238Pu, 239Pu, 240Pu and 242Pu. They were analyzed as blind sources using a novel spectrum analysis tool ADAM. The information needed in the spectrum unfolding was taken only from the spectrum under investigation, and no tracers were applied. Therefore, a Monte Carlo program AASI was used to compute geometrical detection efficiency of the measurement setup. All reported activities corresponded to those of the reference sources within expanded uncertainty. The developed tools can be used for the activity determination in nondestructive alpha spectrometry or when the radionuclide composition does not change during the sample processing.

Keywords

Alpha spectrometry Spectrum unfolding Tracer Plutonium 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  • Roy Pöllänen
    • 1
  • Teemu Siiskonen
    • 1
  • Sakari Ihantola
    • 1
  • Harri Toivonen
    • 1
  • Andreas Pelikan
    • 2
  • Kenneth Inn
    • 3
  • Jerome La Rosa
    • 3
  • Balazs Bene
    • 3
  1. 1.STUK-Radiation and Nuclear Safety AuthorityHelsinkiFinland
  2. 2.Dienstleitungen in der automatischen Datenverarbeitung und InformationstechnikÖsterreichAustria
  3. 3.Ionizing Radiation DivisionRadioactivity Group, NISTGaithersburgUSA

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