Measurement of the Yield and Angular Distributions of Gamma Rays Originating from the Interaction of 14.1-MeV Neutrons w
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CLEI Experiment
Measurement of the Yield and Angular Distributions of Gamma Rays Originating from the Interaction of 14.1-MeV Neutrons with Chromium Nuclei D. N. Grozdanov1), 2)* , N. A. Fedorov1), 3) , Yu. N. Kopatch1), V. M. Bystritsky†1) , T. Yu. Tretyakova1), 4) , I. N. Ruskov2), V. R. Skoy1), S. Dabylova1), 5) , F. A. Aliev1), 6) , K. Hramco1), 7) , N. A. Gundorin1) , I. D. Dashkov3), E. P. Bogolyubov8), D. I. Yurkov8), V. I. Zverev8) , A. Gandhi9) , and A. Kumar9) Received December 25, 2019; revised December 25, 2019; accepted December 25, 2019
Abstract—The reaction induced by the inelastic scattering of 14.1-MeV neutrons on chromium nuclei is studied by means of the tagged-neutron method at the TANGRA (TAgged Neutrons and Gamma RAys) facility deployed at Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, and based on the ING-27 standard neutron generator. The energies of visible gamma transitions occurring in various reactions of neutron interaction with chromium nuclei and their partial cross sections are determined. The results obtained by measuring the angular distribution of gamma rays for 52 Cr are analyzed and are compared with respective results of other experimental studies available in the literature. DOI: 10.1134/S1063778820030096
1. INTRODUCTION In studying processes involving fast neutrons, it is of paramount importance to take into account their inelastic scattering. Since the energy loss is substantially greater in inelastic than in elastic scattering and since the angular distributions of scattering products differ significantly, accurate data on inelastic fastneutron scattering, as well as on gamma rays accompanying it, are required for solving many technological problems, including that of the radiation strength of materials and those of dosimetry and radiation protection. 1)
Joint Institute for Nuclear Research, Dubna, Russia. Institute for Nuclear Research and Nuclear Energy of the Bulgarian Academy of Sciences, Sofia, Bulgaria. 3) Faculty of Physics, Moscow State University, Moscow, Russia. 4) Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia. 5) Gumilyov Eurasian National University, Nur-Sultan, Republic of Kazakhstan. 6) Institute of Geology and Geophysics Azerbaijan National Academy of Sciences, Baku, Azerbaijan. 7) Institute of Chemistry of Moldova Academy of Science, Kishinev, Republic of Moldova. 8) Dukhov All-Russia Research Institute of Automatics, Moscow, Russia. 9) Banaras Hindu University, Varanasi, India. * E-mail: [email protected] † Deceased. 2)
Chromium, along with iron and nickel, is an important component of stainless steels, which are extensively used in various realms—first of all, in nuclear power engineering. In this article, we present experimental results on gamma radiation originating from the inelastic scattering of 14.1-MeV monochromatic neutrons on chromium nuclei—first of all, on nuclei of the isotope 52 Cr in view of its high abundance (83.8%). Owing to the compactness of sources of 14 MeV neutrons, inelast
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