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- Title
The Formation of the Superheavy Hydrogen Isotope [sup 6]H in the Absorption of Stopped π[sup –]-Mesons by Nuclei.
- Authors
Gurov, Yu. B.; Aleshkin, D. V.; Lapushkin, S. V.; Morokhov, P. V.; Panin, A. V.; Pechkurov, V. A.; Poroshin, N. O.; Sandukovsky, V. G.; Tel'kushev, M. V.; Chernyshev, B. A.
- Abstract
An experimental search for the superheavy hydrogen isotope [sup 6]H was conducted through studying the absorption of stopped π[sup –]-mesons by [sup 9]Be and [sup 11]B nuclei. A structure in the missing mass spectrum caused by the resonance states of [sup 6]H was observed in three reaction channels, namely, [sup 9]Be(π[sup –], pd)X,[sup 11]B(π[sup –], d[sup 3]He)X, and [sup 11]B(π[sup –], p[sup 4]He)X. The parameters of the lowest state E[sub r] = 6.6 ± 0.7 MeV and Γ = 5.5 ± 2.0 MeV (E[sub r] is the resonance energy with respect to the disintegration into the triton and three neutrons) are evidence that [sup 6]H is a more weakly bound system than [sup 4]H and [sup 5]H. Three excited states of [sup 6]H were observed. Their resonance levels (E[sub 1r] = 10.7 ± 0.7 MeV, Γ[sub 1r] = 4 ± 2 MeV, E[sub 2r] = 15.3 ± 0.7 MeV, Γ[sub 2r] = 3 ± 2 MeV, and E[sub 3r] = 21.3 ± 0.4 MeV, Γ[sub 3r] = 3.5 ± 1.0 MeV) are energetically capable of disintegrating into six free nucleons. © 2003 MAIK “Nauka / Interperiodica”.
- Subjects
ISOTOPES; HYDROGEN; MESONS; NEUTRONS; TRITONS (Nuclear physics)
- Publication
JETP Letters, 2003, Vol 78, Issue 4, p183
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1622028