Abstract
The angular distribution of the neutrons from the and ground-state reactions has been measured in 10° steps from 0° to 150° for incident proton (laboratory) energies of approximately 6.5, 6.9, 7.5, 8.1, 8.6, 8.9, 9.4, 10.6, 11.4, and 12.2 Mev. Additional measurements were made for at 5.0, 10.2, 10.9, and 13.3 Mev, and for at 5.5, 7.7, 7.8, and 13.6 Mev. A calibrated plastic or stilbene scintillator was used in order to obtain absolute differential cross sections. Time-of-flight techniques on the Liver-more variable energy cyclotron allowed positive identification of the ground-state neutrons. The targets [C (58%) and (90% )] were sufficiently thick to average out the effects of possible compound-nucleus contributions. From preliminary fits to the angular distributions, Glendenning and Bloom have inferred an effective neutron-proton interaction inside the nucleus.
DOI:https://doi.org/10.1103/PhysRev.123.598
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