Lamek Hulthen

The Two-Nucleon Problem

The history of the two-nucleon problem dates only from 1932 when the neutron was discovered by Chadwick (the existence of the proton had already been established by Rutherford in 1919) and the first serviceable nuclear force theory was advanced by Heisenberg and Majorana. The reader who is interested in what might be called the “pre-meson” era of the two-nucleon problem is referred to the classical article by Bethe and Bacher [1] (1936), while the work of the first decade of the meson era is thoroughly reviewed in the book of Rosenfeld [2] (1948). We hope that the development of the later years will be reasonably accounted for by the present article, but we should also like to draw the reader’s attention to other reviews and books [3 to 11], among which we mention those of Blatt and Weisskopf [10] and Sachs [11] as being most comprehensive and up to date.

Über die quantenmechanische Herleitung der Balmerterme

ZusammenfassungEs werden die von Pauli aufgestellten Matrixgleichungen des Wasserstoffatomproblems auf die wohlbekannten Matrixbeziehungen, die bei Impulsmomentbetrachtungen auftreten, zurückgeführt, was zu einer vereinfachten Ableitung der Balmerformel führt.