Analyzing of segregation in mixtures of 3-methylpyridine and heavy water by dynamic neutron radiography (II)

F. Korösi, M. Balaskó, G. Jancsó

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In 3-methylpyridine-heavy water mixture, the segregation in the closed-loop phase diagram in relation to the temperature and heavy water concentration was studied by dynamic neutron radiography (DNR) at the 10 MW VVR-SM Research Reactor in Budapest, Hungary. On the pixel properties of the DNR images, taken from the phase separation process by Iman 2β v. image analyzing program, polynomial fitting, 3-D intensity histograms were applied. For modeling the segregation process, a two-variable segregation model: S = f(T, D) was set up. From the partial differentiation of the function f with respect to the temperature it was established that the highest rate changes in the segregation take place in the region of 50-55 °C and are modified by 3-methylpyridine concentration. The increase in the segregation process progresses up to 93-96 °C, then declines.

Original languageEnglish
Pages (from-to)285-289
Number of pages5
JournalIEEE Transactions on Nuclear Science
Issue number1 II
Publication statusPublished - Feb 1 2005



  • 3-methylpyridine
  • Heavy water
  • Image analysis
  • Modeling
  • Neutron imaging
  • Neutron radiography
  • Segregation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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