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Compound states of high excitation in "' Mg have been observed, with good resolution, in the total neutron yield from a-particle bombardment of ' Ne. Bombarding energies were from 1 to 5 MeV.Analysis of the areas under the yield curves gives n-particle strength functions of S = 0.031+ 0,021 for "Ne+ a and S = 0.026+ 0.012 for ' Ne+ u. For astrophysical purposes these strength functions are used to extrapolate the averaged cross sections to lower energies.

The total neutron yield of the reaction u C(a,n) 17 0 has been measured in the alpha-particle bombardingenergy range of 2.5 to 5.1 MeV. Six new anomalies were observed in the yield curve at alpha-particle energies of 4.030±0.015, 4.07±0.

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