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Information × Registration Number 0220U102279, 0116U004452 , R & D reports Title Study of lowenergy part of excitation spectra of helium isotopes popup.stage_title Head Povoroznyk Orest M, Registration Date 11-03-2020 Organization Institute for Nuclear Research of NAS of Ukraine popup.description2  The aim of this study is to study the excitation spectrum of the 4He nucleus in which, except for the ground bound state, all excited levels are unbound, which decay mainly due to the emission of a pair of particles. It is proposed in one experiment to determine such important quantities as the excitation energy, the cluster structure, and the lifetime of each cluster configuration of the individual excited state of the 4He nucleus, by populating the excited states caused by the interaction of the alpha particle with the tritium nucleus at the energy of interaction of the 4He nucleus with simultaneous observation of all possible two-particle decay channels of the 4He, by simultaneous investigation in the kinematically complete experiment of the three-particle 3H (, tt ) p, 3H (, t3He) n and 3H (, td) d reactions Two-dimensional spectra of tt, t-3He and dd coincidences of three-particle 3H(,tt)p, 3H(,t3He) n and 3H(,td)d reactions were obtained and analyzed as a result of the interaction of the alpha particle beam with the energy E = 67.2 MeV with titanium-tritium target in a kinematically complete experiment under the Monte Carlo method. The magnitudes of the excitation energies, the energy widths for the excited states 4He and the relationships of their different modes of decay are determined, namely, on p + t, n + 3He, and d + d. Product Description popup.authors Gorpininch Olga K Karlyshev Urij Ya Roznyuk Yurij S popup.nrat_date 2020-04-02 Close