Nuclear Engineering and Technology (Aug 2022)

Experimental setup for elemental analysis using prompt gamma rays at research reactor IBR-2

  • C. Hramco,
  • K. Turlybekuly,
  • S.B. Borzakov,
  • N.A. Gundorin,
  • E.V. Lychagin,
  • G.V. Nehaev,
  • A. Yu Muzychka,
  • A.V. Strelkov,
  • E. Teymurov

Journal volume & issue
Vol. 54, no. 8
pp. 2999 – 3005

Abstract

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The new experimental setup has been built at the 11b channel of the IBR-2 research reactor at FLNP, JINR, to study the elemental composition of samples by registration of prompt gamma emission during thermal neutron capture. The setup consists of a curved mirror neutron guide and a radiation-resistant HPGe high-purity germanium detector. The detector is surrounded by lead shielding to suppress the natural background gamma level. The sample is placed in a vacuum channel and surrounded by a LiF shield to suppress the gamma background generated by scattered neutrons. This work presents characteristics of the experimental setup. An example of hydrogen concentration determining in a diamond powder made by detonation synthesis is given and on its basis, the sensitivity of the setup is calculated being ∼4 μg.

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