Levels and gamma energies ofAl28studied by thermal neutron capture

Abstract
The Al27(n,γ)Al28 reaction has been studied using curved crystal spectrometers, a pair spectrometer, and a Ge(Li) detector. Applying a self-consistent energy calibration, a set of 199 calibration energies relative to the 411 keV Au standard was obtained. An extensive level scheme up to 8 MeV has been established. The neutron binding energy was determined to be 7725.18±0.09 keV. The energy of the Si28 transition following the β decay of Al28 was found to be 1778.987±0.015 keV.