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  • Muzalevskii, I. A.Joint Institute for Nuclear Research (JINR), Russian Federation,Slezska univerzita v Opave (author)

Resonant states in H 7: Experimental studies of the H 2 (He 8, He 3) reaction

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • 2021

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:40985554-a984-4096-8065-7a42e8e24106
  • https://research.chalmers.se/publication/523735URI
  • https://doi.org/10.1103/PhysRevC.103.044313DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • The extremely neutron-rich system H7 was studied in the direct H2(He8,He3)H7 transfer reaction with a 26 AMeV secondary He8 beam [Bezbakh et al., Phys. Rev. Lett. 124, 022502 (2020)PRLTAO0031-900710.1103/PhysRevLett.124.022502]. The missing mass spectrum and center-of-mass angular distributions of H7, as well as the momentum distribution of the H3 fragment in the H7 frame, were constructed. In addition, we carried out another experiment with the same beam but a modified setup, which was cross-checked by the study of the H2(Be10,He3)Li9 reaction. A solid experimental evidence is provided that two resonant states of H7 are located in its spectrum at 2.2(5) and 5.5(3)MeV relative to the H3+4n decay threshold. Also, there are indications that the resonant states at 7.5(3) and 11.0(3)MeV are present in the measured H7 spectrum. Based on the energy and angular distributions, obtained for the studied H2(He8,He3)H7 reaction, the weakly populated 2.2(5)-MeV peak is ascribed to the H7 ground state. It is highly plausible that the firmly ascertained 5.5(3)-MeV state is the 5/2+ member of the H7 excitation 5/2+-3/2+ doublet, built on the 2+ configuration of valence neutrons. The supposed 7.5-MeV state can be another member of this doublet, which could not be resolved in Bezbakh et al. [Phys. Rev. Lett. 124, 022502 (2020)PRLTAO0031-900710.1103/PhysRevLett.124.022502]. Consequently, the two doublet members appeared in the spectrum of H7 in the work mentioned above as a single broad 6.5-MeV peak.

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Added entries (persons, corporate bodies, meetings, titles ...)

  • Bezbakh, A.A.Joint Institute for Nuclear Research (JINR), Russian Federation,Slezska univerzita v Opave (author)
  • Nikolskii, E.Y.Joint Institute for Nuclear Research (JINR), Russian Federation,National Research Centre "Kurchatov Institute" (author)
  • Chudoba, V.Joint Institute for Nuclear Research (JINR), Russian Federation,Slezska univerzita v Opave (author)
  • Krupko, S. A.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Belogurov, S. G.Joint Institute for Nuclear Research (JINR), Russian Federation,National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russian Federation (author)
  • Biare, D.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Fomichev, A. S.Joint Institute for Nuclear Research (JINR), Russian Federation,Dubna International University (author)
  • Gazeeva, E. M.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Gorshkov, A. V.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Grigorenko, LJoint Institute for Nuclear Research (JINR), Russian Federation,National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russian Federation,National Research Centre "Kurchatov Institute" (author)
  • Kaminski, G.Joint Institute for Nuclear Research (JINR), Russian Federation,Uniwersytet Warszawski,University of Warsaw (author)
  • Kiselev, O.Helmholtz Zentrum,Helmholtz Center (author)
  • Kostyleva, D.Helmholtz Zentrum,Helmholtz Center,Justus-Liebig-Universität Gießen,Justus Liebig University Giessen (author)
  • Kozlov, M. YuJoint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Mauyey, B.Joint Institute for Nuclear Research (JINR), Russian Federation,L.N. Gumilyov Eurasian National University (author)
  • Mukha, I. G.Helmholtz Zentrum,Helmholtz Center (author)
  • Parfenova, Y. L.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Piatek, W.Joint Institute for Nuclear Research (JINR), Russian Federation,Uniwersytet Warszawski,University of Warsaw (author)
  • Quynh, A. M.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Schetinin, V. N.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Serikov, A.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Sidorchuk, S. I.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Sharov, P.G.Joint Institute for Nuclear Research (JINR), Russian Federation,Slezska univerzita v Opave (author)
  • Shulgina, N. B.Joint Institute for Nuclear Research (JINR), Russian Federation,National Research Centre "Kurchatov Institute" (author)
  • Slepnev, R. S.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Stepantsov, S. V.Joint Institute for Nuclear Research (JINR), Russian Federation (author)
  • Swiercz, A.Joint Institute for Nuclear Research (JINR), Russian Federation,Akademia Gorniczo-Hutnicza im. Stanislawa Staszica w Krakowie,AGH University of Science and Technology (author)
  • Szymkiewicz, P.Joint Institute for Nuclear Research (JINR), Russian Federation,Akademia Gorniczo-Hutnicza im. Stanislawa Staszica w Krakowie,AGH University of Science and Technology (author)
  • Ter-Akopian, G. M.Joint Institute for Nuclear Research (JINR), Russian Federation,Dubna International University (author)
  • Wolski, R.Joint Institute for Nuclear Research (JINR), Russian Federation,Polish Academy of Sciences (author)
  • Zalewski, B.Joint Institute for Nuclear Research (JINR), Russian Federation,Uniwersytet Warszawski,University of Warsaw (author)
  • Zhukov, Mikhail,1943Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f2bmz (author)
  • Joint Institute for Nuclear Research (JINR), Russian FederationSlezska univerzita v Opave (creator_code:org_t)

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  • In:Physical Review C103:42469-99852469-9993

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