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Information × Registration Number 0222U002500, 0116U007022 , R & D reports Title The study of the excited states of nuclei and their cluster structure in nuclear interactions popup.stage_title Head Povoroznyk Orest M., д.ф.-м.н. Registration Date 13-02-2022 Organization Institute of Nuclear Research of the National Academy of Sciences of Ukraine popup.description2 Due to objective reasons, experimental correlation studies of α + 12C at E12C. = 120 MeV and excitation spectra of 4He, * Be and 12C nuclei to the excitation energy of 30 MeV (step 4) could not be performed. Therefore, studies of unbound states of the 6Li nucleus in a wide range of excitation energies were performed.The excitation spectrum of the 6Li nucleus up to 26MeV was studied in a kinematically complete study of three-particle reactions (3He (, p) d with Q3 = -5.49MeB, 3H (, d) n with Q3 = -6.25MeB and 3H (, t ) n with Q3 = -20.49MeB) at E = 27.2 and 67.2 MeV with tritium and helium nuclei3.This work is a generalization of the research cycle of the 6Li nucleus. The subject of our study was excited unbound levels of the 6Li nucleus, formed in the first stage of the interaction of beams of alpha particles with tritium and helium nuclei, which in the second stage decayed due to the radiation of d +  or t + пар pairs. Two-dimensional EpE, EdE and EtE spectra of p- d- and t- coincidences were obtained, the analysis of which allowed to obtain new information about the structure of excited levels of the 6Li nucleus. For the first time, three unrelated excited levels in the energy range of the 6Li nucleus excitation energy from 7 to 14 MeV were observed, as well as two excited 6Li levels with excitation energies of 21.30 and 21.90 MeV], the existence of which was predicted by theoretical calculations in the late 1960s.For the first time, a kinematically complete study of the 3He (, p) d reaction on 3He nuclei of radiogenic origin accumulated in titanium-tritium targets was performed. The mechanism for moving the targets was modernized by replacing the mechanical position sensors of the target with optoelectronic ones, and replacing the stepper motor with a more accurate one on the U-120 cyclotron.Work continued on the program of conversion of gamma spectra to one calibration on energy without carrying out the calibration procedure (in the problem of su Product Description popup.authors Voiter Anatolii P Gorpinich Olga K Dryapachenko Ihor P Dryapachenko Ihor P Karlyshev Yurij Ya Levon Oleksandr I popup.nrat_date 2022-03-09 Close