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Электронный каталог: Muzalevskii, I. A. - Population of Tetraneutron Continuum in Reactions of *8He on Deuterium
Muzalevskii, I. A. - Population of Tetraneutron Continuum in Reactions of *8He on Deuterium
Статья
Автор: Muzalevskii, I. A.
Physical Review C: Population of Tetraneutron Continuum in Reactions of *8He on Deuterium
б.г.
ISBN отсутствует
Автор: Muzalevskii, I. A.
Physical Review C: Population of Tetraneutron Continuum in Reactions of *8He on Deuterium
б.г.
ISBN отсутствует
На полку
Статья
Muzalevskii, I.A.
Population of Tetraneutron Continuum in Reactions of *8He on Deuterium / I.A.Muzalevskii, N.B.Shulgina, A.A.Bezbakh, V.Chudoba, S.A.Krupko, S.G.Belogurov, D.Biare, I.A.Egorova, A.S.Fomichev, E.M.Gazeeva, A.V.Gorshkov, L.V.Grigorenko, G.Kaminski, M.Khirk, M.Yu.Kozlov, B.Mauyey, E.Yu.Nikolskii, Yu.L.Parfenova, W.Piatek, A.M.Quynh, A.Serikov, S.I.Sidorchuk, P.G.Sharov, R.S.Slepnev, S.V.Stepantsov, A.Swiercz, P.Szymkiewicz, G.M.Ter-Akopian, B.Zalewski, [a.o.]. – Text : electronic // Physical Review C. – 2025. – Vol. 111, No. 1. – P. 014612. – URL: https://doi.org/10.1103/PhysRevC.111.014612.
Search for the population of the low-energy continuum of a tetraneutron system was performed for reactions of a beam on a deuterium target. These studies are based on the data [I. A. Muzalevskii et al., Phys. Rev. C 103, 044313 (2021)] previously used for the studies of and in the and *2H(*8He,*4He)*6H reactions. Evidence for a hump in the 4n continuum at 3.5±0.7 and 3.2±0.8MeV was observed in the *2H(*8He,*6Li)*4n and *2H(*8He,*3He)*7H→*3H + *4n reactions, respectively. The observed statistics is quite low (6 events and up to 40 events) corresponding to very low cross sections of few microbarns or tens of microbarns. The background conditions for the *2H(*8He,*6Li)*4n reaction are shown to be good, favoring the physical nature of the observed events. The *2H(*8He,*3He)*7H→*3H+*4n process transforms to the *2H(*8He,*6Li* )*4n reaction in the limit of the highest *7H decay energies. The population of the low-energy region in the 4n spectrum is found to be perfectly correlated with the population of the lowest *6Li state in the *3He+*3H continuum with 𝐸* =18MeV. Theoretical calculations of *8He in five-body 𝛼+*4𝑛 and of *4n in four-body hyperspherical models are presented. The *8He wave function is shown to contain strong specific correlations, which may give rise to very low-energy structures in the tetraneutron continuum in extreme-peripheral reaction scenarios.
ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 343 - Ядерные реакции
Бюллетени = 13/025
Muzalevskii, I.A.
Population of Tetraneutron Continuum in Reactions of *8He on Deuterium / I.A.Muzalevskii, N.B.Shulgina, A.A.Bezbakh, V.Chudoba, S.A.Krupko, S.G.Belogurov, D.Biare, I.A.Egorova, A.S.Fomichev, E.M.Gazeeva, A.V.Gorshkov, L.V.Grigorenko, G.Kaminski, M.Khirk, M.Yu.Kozlov, B.Mauyey, E.Yu.Nikolskii, Yu.L.Parfenova, W.Piatek, A.M.Quynh, A.Serikov, S.I.Sidorchuk, P.G.Sharov, R.S.Slepnev, S.V.Stepantsov, A.Swiercz, P.Szymkiewicz, G.M.Ter-Akopian, B.Zalewski, [a.o.]. – Text : electronic // Physical Review C. – 2025. – Vol. 111, No. 1. – P. 014612. – URL: https://doi.org/10.1103/PhysRevC.111.014612.
Search for the population of the low-energy continuum of a tetraneutron system was performed for reactions of a beam on a deuterium target. These studies are based on the data [I. A. Muzalevskii et al., Phys. Rev. C 103, 044313 (2021)] previously used for the studies of and in the and *2H(*8He,*4He)*6H reactions. Evidence for a hump in the 4n continuum at 3.5±0.7 and 3.2±0.8MeV was observed in the *2H(*8He,*6Li)*4n and *2H(*8He,*3He)*7H→*3H + *4n reactions, respectively. The observed statistics is quite low (6 events and up to 40 events) corresponding to very low cross sections of few microbarns or tens of microbarns. The background conditions for the *2H(*8He,*6Li)*4n reaction are shown to be good, favoring the physical nature of the observed events. The *2H(*8He,*3He)*7H→*3H+*4n process transforms to the *2H(*8He,*6Li* )*4n reaction in the limit of the highest *7H decay energies. The population of the low-energy region in the 4n spectrum is found to be perfectly correlated with the population of the lowest *6Li state in the *3He+*3H continuum with 𝐸* =18MeV. Theoretical calculations of *8He in five-body 𝛼+*4𝑛 and of *4n in four-body hyperspherical models are presented. The *8He wave function is shown to contain strong specific correlations, which may give rise to very low-energy structures in the tetraneutron continuum in extreme-peripheral reaction scenarios.
ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 343 - Ядерные реакции
Бюллетени = 13/025
