Loss of 8Li recoil nuclei in 7Li(d,p)8Li and implications on the 7Be(p,γ)8B cross section

The absolute cross section σ17(E) of the 7Be(p,γ)8B reaction was measured. In all direct measurements this cross section was determined from the yield of the 8B recoils. The absolute cross section σ27(E) of the 7Li(d,p)8Li reaction is also of interest, since it serves for the normalisation of the 7Be(p,γ)8B cross section. The 8Li recoils exhibit similar kinematics in their β-delayed α-decay via 8Be. The experiments were carried out with the 4 MV Dynamitron tandem accelerator at the Ruhr-Universitaet Bochum with a deuteron beam. The loss of 8Li recoil nuclei in 7Li(d,p)8Li has been measured using different backings and 7LiF target thickness. The results confirm essentially the recent TRIM calculations. (K.A.)