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

Hramco C. Turlybekuly K. Borzakov S.B. Gundorin N.A. Lychagin E.V. Nehaev G.V. Muzychka A.Y. Strelkov A.V. Teymurov E.
August 2022 Korean Nuclear Society

Nuclear Engineering and Technology
2022 #54 Issue 8 2999 - 3005 pp.

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.

Diamond powder , Elemental analysis , Hydrogen content , IBR-2 FLNP JINR , Neutron activation analysis , Prompt gamma

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Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR), Joliot Currie Str., 6, Moscow Region, Dubna, 141980, Russian Federation
Institute of Chemistry of Moldova (ICh,) Academiei str., 3, MD, Chisinau, 2028, Moldova
L.N. Gumilyov Eurasian National University, Satpayev str, 2, Nur-Sultan, 010000, Kazakhstan
The Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan, Ibragimova str., 1, Almaty, 050032, Kazakhstan
Dubna State University, Universitetskaya str., 19, Moscow Region, Dubna, 141980, Russian Federation
National Nuclear Research Centre, Baku-Shamakhi Highway, Qobu Settlement, AZ1073, Azerbaijan
National Nuclear Research University MEPhI (Moscow Engineering Physics Institute), Kashirskoe Highway, 31, Moscow, 115409, Russian Federation

Frank Laboratory of Neutron Physics (FLNP)
Institute of Chemistry of Moldova (ICh
L.N. Gumilyov Eurasian National University
The Institute of Nuclear Physics
Dubna State University
National Nuclear Research Centre
National Nuclear Research University MEPhI (Moscow Engineering Physics Institute)

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