Phys.Rev. C 108, 025802 (2023)

A.Toth, T.Szucs, T.N.Szegedi, Gy.Gyurky, Z.Halasz, G.G.Kiss, Zs.Fulop

Experimental determination of the ³He(α, γ)⁷Be reaction cross section above the ⁷Be proton separation threshold

NUCLEAR REACTIONS ³He(α, γ)⁷Be, E=11-20 Mev; measured Eγ, Iγ; deduced σ(E), possible resonance. Activation technique. R-matrix analysis. No prominent structures are observed around known ⁷Be level, but overall structure of the cross-section suggest a broad resonance peaking around E^*=7.5 MeV of ⁷Be excitation energy. Comparison to previous experimental data obtained with different methods and to the data obtained for mirror reaction ³H(α, γ)⁷Li. Thin-window gas-cell target irradiated at the Atomki MGC-20 cyclotron. Activated target measured with HPGe detector.

doi: 10.1103/PhysRevC.108.025802