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Published May 15, 1952 | public
Journal Article Open

The disintegration of N15 by protons


The absolute cross sections of the reactions (1) N15(p,α)C12, (2) N15(p,αγ)C12, and (3) N15(p,γ)O16 have been measured from 0.2 to 1.6 Mev. The thick target yield of reaction (1) was also measured at 0.100 Mev. Resonances were found at 0.338, 1.05, and 1.210 Mev for reaction (1); at 0.429, 0.898, 1.210, and possibly 1.05 Mev for reaction (2); and at 1.05 Mev for reaction (3). Most of the resonances follow closely the shape of the single level dispersion formula. The 1.05-Mev resonance is asymmetric and cannot be explained as easily. The cross section of reaction (1) has been extrapolated to stellar energies and is given by σ=(110 / E)×exp(-6.95E-1 / 2) barns for E in Mev in the energy region near 0.030 Mev.

Additional Information

©1952 The American Physical Society. Received February 8, 1951. The authors want to express their gratitude to Professors R.F. Christy and T. Lauritsen for many discussions during the course of this research. This work assisted by the joint program of the ONR and AEC.


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