Abstract
The resonance capture of slow neutrons by has been studied by absorption methods with "good" geometry and thin detectors using the cyclotron as an intense source of neutrons. The experimental cross section for self-absorption for slow neutrons transmitted by cadmium was measured with thin absorbers and found to be 4600× /atom±40 percent. Evidence is given for the existence of more than one level. The predominant level has an energy somewhat under 11 ev, a total natural width somewhat less than 0.20 ev and a neutron width somewhat less than 0.0086 ev. The value in the resonance region was found to be 290× /atom±40 percent.
- Received 27 April 1940
DOI:https://doi.org/10.1103/PhysRev.80.499
©1950 American Physical Society