Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Experimental setup for elemental analysis using prompt gamma rays at research reactor IBR-2

  • Hramco, C. (Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR)) ;
  • Turlybekuly, K. (Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR)) ;
  • Borzakov, S.B. (Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR)) ;
  • Gundorin, N.A. (Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR)) ;
  • Lychagin, E.V. (Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR)) ;
  • Nehaev, G.V. (Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR)) ;
  • Muzychka, A. Yu (Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR)) ;
  • Strelkov, A.V. (Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR)) ;
  • Teymurov, E. (Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR))
  • Received : 2021.10.21
  • Accepted : 2022.02.21
  • Published : 2022.08.25
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Abstract

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 ㎍.

Keywords

Acknowledgement

The work partially was supported by the grants RFFI-18-29-19039, CREMLINplus Grant agreement 871072, and JINR AYSS No 21-402-10.

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