Total Cross Section of Be, O, Na, and Ca for Fast Neutrons
Physical Review1949Vol. 75(8), pp. 1124–1127
Abstract
The total cross sections of Be, O, Na, and Ca were investigated as a function of neutron energy in ranges between 30 and 1000 kev with a resolving power of approximately 20 kev. In Be a resonance was observed at 625 kev, presumably caused by $p$-neutrons. The resonance in O at 440 kev is probably due to $p$-neutrons forming a compound nucleus of spin $\frac{3}{2}$. In Na and Ca numerous peaks were found. The cross section of Ca has values below 1.5 barns over a considerable range of energies.
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