Highly excited states of 6He
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Highly excited states of 6He are sought in the reactions involved in the absorption of stopped pions by 10,11B nuclei. Several levels in 6He are observed for the first time. A state with E x ≈ 9.3(2) MeV and Γ ≈ 1.0(4) MeV is seen to form in two reactions: 10B(π−, pt)X and 11B(π−, dt)X. Two states are seen to form in the 10B(π−, pt)X reaction channel at energies above the threshold of 6He decay into two tritons (E x ≥ 12.3 MeV): one state with E x = 22(1) MeV, Γ = 2.7(1.4) MeV and the other with E x = 27.0(8) MeV, Γ = 2.5(1.1) MeV.
KeywordsExcited State Reaction Channel Giant Dipole Resonance Miss Mass Spectrum Coincidence Background
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- 8.Gurov, Yu.B., et al., Pis’ma Zh. Eksp. Teor. Fiz., 2006, vol. 84.Google Scholar