Detection of superheavy hydrogen isotopes in the reaction for the absorption of π mesons by 9Be nuclei
Gornov M. G. , Gurov Yu. B. , Koptev V. P. , Morokhov P. V. , Oganesyan K. O. , Osipenko B. P. , Pechkurov V. A., Savel'ev V. I. , Sergeev F. M. , Khomutov A. A., Chernyshev B. A. , Shafigullin R. R. , Shishkov A. V.
Correlation measurements of the pairs of charged particles, emitted at a 180° angle in the reaction in which stopped π~~ mesons are captured by 9Be nuclei, were carried out for the first time. Analysis of the spectra made it possible to identify the three-body reactions involving the superheavy hydrogen isotopes 4H and 5H. The 5H state which was detected was found to have the following parameters: Er = 7.4 ± 0.7 MeV and Γ = 8 + 3 MeV.