Approved Work Item
ISO/AWI 11483
Nuclear fuel technology — Preparation of plutonium sources and determination of 238Pu/239Pu isotope ratio by alpha spectrometry
Reference number
ISO/AWI 11483
Edition 3
© ISO 2025
Approved Work Item
Under development
A working group has prepared a draft.
Will replace ISO 11483:2005

Abstract

ISO 11483: 2005 describes three simple and fast procedures to prepare plutonium sources and a procedure to measure the activity ratio of 238Pu to (239Pu + 240Pu) by alpha spectrometry. The alpha spectrometry method is used for the determination of isotopic abundance of 238Pu in combination with mass spectrometry and eliminates the possible interferences of 238U in the latter method. It applies to the analysis of purified solutions of plutonium in 2 mol/l to 4 mol/l nitric acid containing 50 micrograms to 200 micrograms of plutonium per millilitre, as may result from the chemical treatment and purification preceding plutonium isotopic analysis by mass spectrometry.

General information

  • Status
     : Under development
    Stage
    : New project registered in TC/SC work programme [20.00]
  • Edition
     : 3
  • Technical Committee :
    ISO/TC 85/SC 5
  • RSS updates

Life cycle

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