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Production of Heavy Helium 5Hе in the Absorption of Stopped Pions by 10,11B Nuclei

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Helium 5Hе states are sought in missing-mass (MM) spectra from reactions of the absorption of stopped pions: 10В(π−, dt)Х and 11В(π−, tt)Х. The experiment is conducted using the LANL accelerator equipped with a two-arm semiconductor charged-particle spectrometer. The parameters of the ground state agree with the literature data. The best fit for the first excited level is obtained at Er = 1.8(5) MeV and Γ = 4.7(7) MeV. Neither of the two reactions produce statistically significant evidence for the presence of highly excited (Ex ≥ 20 MeV) states of 5Hе.

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Authors and Affiliations

  1. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, 115409, Russia

    Yu. B. Gurov, L. Yu. Gèant-Korotkova, V. S. Karpukhin, S. V. Lapushkin, T. I. Leonova, R. V. Pritula, V. G. Sandukovsky & B. A. Chernyshev

Authors
  1. Yu. B. Gurov
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  2. L. Yu. Gèant-Korotkova
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  3. V. S. Karpukhin
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  4. S. V. Lapushkin
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  5. T. I. Leonova
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  6. R. V. Pritula
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  7. V. G. Sandukovsky
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  8. B. A. Chernyshev
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Corresponding author

Correspondence to B. A. Chernyshev.

Additional information

Original Russian Text © Yu.B. Gurov, L.Yu. Gèant-Korotkova, V.S. Karpukhin, S.V. Lapushkin, T.I. Leonova, R.V. Pritula, V.G. Sandukovsky, B.A. Chernyshev, 2018, published in Izvestiya Rossiiskoi Akademii Nauk, Seriya Fizicheskaya, 2018, Vol. 82, No. 6.

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Gurov, Y.B., Gèant-Korotkova, L.Y., Karpukhin, V.S. et al. Production of Heavy Helium 5Hе in the Absorption of Stopped Pions by 10,11B Nuclei. Bull. Russ. Acad. Sci. Phys. 82, 678–681 (2018). https://doi.org/10.3103/S1062873818060126

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  • DOI: https://doi.org/10.3103/S1062873818060126

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