Nondestructive determination of plutonium by gamma spectrometry and neutron well coincidence counting

Chhavi Agarwal, Sanhita Poi, T. N. Nathaniel, Amol Mhatre, P. C. Kalsi, Sarbjit Singh, A. Goswami

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Different NDA methods based on gamma ray and neutron measurements developed for the determination of Pu in solid samples is reported. In the gamma spectrometric measurements for solid samples, a method which takes advantage of the multiple γ-rays emitted by Pu and relies on the empirical relation between apparent mass of the sample and γ-ray energy was used. The method is applicable for the determination of small quantities of plutonium samples of non standard geometry by gamma ray spectrometry. The gross and coincidence neutron count rates for two different sets of standard Pu oxide powder samples were found to fall on different calibration lines. Isotopic composition of the two sets were determined using gamma ray spectrometry to obtain effective 240Pu content in the samples. A common calibration curve could be obtained when coincidence count rates were plotted vs. effective 240Pu content.

Original languageEnglish
Pages (from-to)131-133
Number of pages3
JournalJournal of Nuclear Materials
Issue number1
StatePublished - 15 Mar 2009
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • General Materials Science
  • Nuclear Energy and Engineering


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