Key points are not available for this paper at this time.
Göttinger Dissertation. Reprint of “Über Elementarakte mit zwei Quantensprüngen”, Annalen der Physik 9 401, 273–294 (1931). Translation by Daniel C. Koepke, Montana State University, Department of Physics, Bozeman, MT 59717-3840, USA; e-mail: dkoepke@physics.montana.edu
M. Göppert‐Mayer (Thu,) studied this question.