Searching for rare cluster configurations of  14 C nuclei in the pion absorption reaction

Yu. B. Gurov; V. S. Karpukhin; S. V. Lapushkin; R. V. Pritula; B. A. Chernyshev; T. D. Shchurenkova; L. Yu. Korotkova

doi:10.3103/S1062873816030199

Searching for rare cluster configurations of ¹⁴C nuclei in the pion absorption reaction

Autores: Gurov Y.B.¹, Karpukhin V.S.¹, Lapushkin S.V.¹, Pritula R.V.¹, Chernyshev B.A.¹, Shchurenkova T.D.¹, Korotkova L.Y.¹
Afiliações:
1. National Research Nuclear University (MEPhI)
Edição: Volume 80, Nº 3 (2016)
Páginas: 219-222
Seção: Proceedings of the LXV International Conference “Nuclei 2015: New Horizons in Nuclear Physics, Nuclear Power Engineering, and Femto- and Nanotechnologies” (LXV International Meeting on Nuclear Spectroscopy and the Structure of Atomic Nuclei)
URL: https://journals.rcsi.science/1062-8738/article/view/183980
DOI: https://doi.org/10.3103/S1062873816030199
ID: 183980

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Analysis of the two-dimensional Dalitz plot measured in the reaction ¹⁴C(π^–, pd)X allows us to follow the absorption of pions by cluster ³p and identify signs of the configuration ³p + ¹¹Li in the ¹⁴C nucleus. The highly excited state of ^12,13Be beryllium isotopes with excitation energies E* ≈ 30 MeV and which decay with the emission of hydrogen isotopes is observed for the first time: ¹²Be* → p + ¹¹Li and ¹³Be* → d + ¹¹Li.