Gamma ray spectrum from the thick-target 7 Li(p, γ) 8 Be capture reaction measured with a ∼ 1.5 mA proton beam at 1.79 MeV (below neutron threshold) incident on the LiLiT target. The spectrum was measured with a 6 × 4 NaI(Tl) detector placed at a distance of 2.7 m from LiLiT behind a 1.5 m thick concrete wall. The black spectrum is the spectrum obtained while the proton beam impinged on the LiLiT, the red spectrum was obtained while there was no protons on LiLiT and the blue spectrum is the net counts.