Abstract
A survey of experimental results on the level structure in the heavy helium isotope \({}^{6}\)He that were obtained in reactions induced by stopped pion absorption in \({}^{9}\)Be, \({}^{10,11}\)B, and \({}^{12}\)C light nuclei is presented. The respective measurements were performed on the low-energy pion channel of the accelerator at the Los Alamos National Laboratory (LANL) by means of a two-arm semiconductor spectrometer. A high statistical significance of the results was attained over a broad excitation-energy range extending up to 40 MeV. Several highly excited states, including \(t+t\) cluster resonances, were revealed for the first time.
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Funding
This work was supported by the Ministry of Science and Higher Education of Russian Federation (grant no. 3.4911.2017/6.7) and by the Competitiveness Program for National Research Nuclear University MEPhI (agreement of August 27, 2013, with the Ministry of Science and Higher Education of Russian Federation—project no. 02.a03.21.0005).
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Gurov, Y.B., Lapushkin, S.V., Leonova, T.I. et al. Formation of the Heavy Isotope \({}^{\boldsymbol{6}}\)He upon Stopped Pion Absorption by Nuclei. Phys. Atom. Nuclei 83, 377–383 (2020). https://doi.org/10.1134/S1063778820030114
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DOI: https://doi.org/10.1134/S1063778820030114