Zero-Field Quantum Beats in Lyman-βRadiation from Beam-Foil-Excited Hydrogen Atoms

Abstract
Zero-field quantum beats were observed in Lyβ emission (1026 Å) from hydrogen atoms formed by beam-foil excitation, and the energy dependence of the magnetic-substate cross sections for n=3, l=1 states was determined for beam energies in the range from 230 to 500 keV/atom.