High resolution alpha-particle-spectrometry for radium analysis-the effects of sample thickness and filter pore size

  • Lim T
  • Dave N
  • Cloutier N
  • 3


    Mendeley users who have this article in their library.
  • 6


    Citations of this article.


In the α-particle spectrometric technique for radium isotope analysis, the effects of the barium carrier thickness and pore size of the membrane filter (used for the main BaRa sulphate filtration) on the resolution of the α-particle energy peaks were investigated. With 0.45 μm Millipore membrane filters, the full widht at half maximum (FWHM) for 4.78 MeV α-decay peak of226Ra decreased from 221.7 to 121.3 keV with reduction in barium carrier additions from 320 to 20 μg Ba. The resolution further improved to 67.0 keV for 20 μg Ba carrier when 0.2 μm Nucleopore filters were used. There was also a significant decrease (20-50%) in the retention of radon and its daughters compared to their equilibrium concentrations as the barium carrier thickness was reduced. A correlation study between133Ba tracer and226Ra isotopes recovery factors gave a recovery factor226Ra133Ba ratio of 0.93 ± 0.08 in the main BaRa sulphate precipitate under various pH and sulphate concentration conditions. © 1988.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Tjoe Pa Lim

  • Nand K. Dave

  • Normand R. Cloutier

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free