Angular Distribution of 1.368 MeV Gamma-Rays from Inelastic Scattering of 14.1 MeV Neutrons on 24 Mg I.N. Ruskov 1,4,* , Yu.N. Kopatch 1 , V.M. Bystritsky 1 , D.N. Grozdanov 1,4 , N.A. Fedorov 1,2 , T.Yu. Tretyakova 3 , V.R. Skoy 1 , S. Dabylova 1,5 , F.A. Aliyev 1,6 , C. Hramco 1,7 , A. Kumar 8 , A. Gandhi 7 , D. Wang 9 , E.P. Bogolyubov 10 , Yu.N. Barmakov 10 , and TANGRA collaboration 1 Joint Institute for Nuclear Research (JINR), Dubna, Russia 2 Faculty of Physics, Lomonosov Moscow State University (MSU), Moscow, Russia 3 Skobeltsyn Institute of Nuclear Physics (SINP), MSU, Moscow, Russia 4 Institute for Nuclear Research and Nuclear Energy of Bulgarian Academy of Sciences (INRNE-BAS), Sofia, Bulgaria 5 L.N. Gumilyov Eurasian National University (ENU), Nur-Sultan, Kazakhstan 6 Institute of Geology and Geophysics (IGG), Baku, Azerbaijan 7 Institute of Chemistry, Academy of Science of Moldova, Chisinau, Republic of Moldova 8 Banaras Hindu University, Varanasi, India 9 Xi’an Jiao Tong University, Xi’an, China 10 All-Russia Research Institute of Automatics (VNIIA), Moscow, Russia Abstract In the frame of TANGRA-project at JINR-FLNP (Dubna) we measured the gamma-rays resulting from the inelastic scattering of 14.1 MeV neutrons on magnesium. As a source of neutrons we used ING-27 portable neutron generator of VNIIA (Moscow) where the neutrons are produced in a d-t fusion-fission nuclear reaction, 3 H(d,n) 4 He. The α-particles were registered by a 64-pixel Si charge particle detector embedded in ING-27 vacuum chamber. The sample tested was a 10cm-thick plastic cube filled with MgO powder. The gamma-rays from the interaction of neutrons with the sample we registered by a Romashka-type Fe-protected array, consisted of 22 hexagonal NaI(Tl) scintillator prisms. The analog signals form all the α- and γ- detectors were collected in list-mode, simultaneously, by a computerized 32-channel data acquisition system (DAQ) from JINR AFI-electronics, which was used, also, for digitizing and storing the waveforms on the computer hard-drive for further off-line analysis with CERN-ROOT modular scientific software toolkit. Using the time-correlated associated particle method (TCAPM), also known as tagged neutron method (TNM), the influence of the background radiation on the collected gamma-ray spectra was drastic reduced. We obtained the angular distribution of 1.368 MeV gamma-rays from 24 Mg(n, n′γ)-reaction in the range from ~15 O to ~165 O with a good statistical accuracy. Here we report the results from our first experiment in comparison with the available data from the other authors. Further experiments are foreseen. Keywords: ING-27; 14 MeV tagged neutrons; tagged neutron method; inelastic neutron scattering; gamma-rays angular distribution; NaI(Tl) multi-detector system * Corresponding author tel.: + 359-979-2-54-57 email: : ivan.n.ruskov@gmail.com; ivan@inrne.bas.bg.