The previous compilation (1975FI08) listed a small number of references reporting on the four reactions discussed below. Only one of the experiments cited contained any evidence for a 3p resonance, and the discussion suggested that the observed enhancement in 3He(p, n) was more likely a final state interaction. In the work reported since (1975FI08) and listed below, only (1974POZN) contains any mention of the tri-proton, and no evidence for its existence was observed.
Spectra obtained at Eπ = 22 and 25 MeV at θn = 3.5° - 40° (1974POZN) showed no structure indicative of formation of the tri-proton.
No work was reported on reaction 3.
No work was reported on reaction 4.