LXI. The levels of 19 F from inelastic neutron scattering

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Abstract
The gamma-rays following inelastic neutron scattering in 19F have been studied as a function of neutron bombarding energy up to 2.2 Mev. The gamma-ray spectra in coincidence with radiation from the lowest excited levels, at 111 and 196 kev, have also been measured near the thresholds for excitation of the higher levels. The following gamma-rays have been found: 1.236±0.012 and 1.356±0.012 Mev, in coincidence with 111 kev radiation; 1.360±0.012 Mev, in coincidence with 196 kev radiation; 1.472±0.016 Mev corresponding to a ground-state transition. The results are interpreted in terms of 19F levels at 1.557, 1.466 and 1.346 Mev. Branching ratios for the decay of each level to the ground, 111 kev and 196 kev states have been examined. No other levels up to 2.0 Mev have been found.

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