Measurement of 9Be(3He,p i )11B (i=0, 1, ..., 9) nuclear reaction cross sections in the 1.0 MeV to 2.5 MeV energy range ...

In fusion materials research using ion beam analysis techniques, the reactions Be-9(He-3,p( i ))B-11 (i = 0, 1, 2 horizontal ellipsis ) are relevant to probe Be-related plasma-wall interactions. The cross sections for this reaction have been examined previously; nevertheless, there is a similar to 40% difference in the studied energy interval between the two most relevant earlier studies. Therefore, a new data set for the differential cross sections Be-9(He-3,p( i ))B-11 for the proton groups i = 0, 1, horizontal ellipsis , 9 is given. The measurements were performed using a thin beryllium film in the laboratory energy range from 1.0 MeV to 2.5 MeV in steps of 50 keV for lab angles from 115 degrees to 165 degrees to the incoming beam direction in steps of 10 degrees. Additional measurements for intermediate angles were performed over the same energy range in steps of 250 keV. The results are in good agreement with one of the previous studies and a benchmarking measurement was performed against the yield of a beryllium thick target at 2.5 MeV for 135 degrees.