In this book we summarize the essential results of our efforts over the
years to calculate energies, wave functions, and electromagnetic
transitions of atoms as functions of the magnetic field strength from
laboratory fields up to neutron star magnetic fields. Motivated by the
observational evidence of huge magnetic 5 fields with strengths up to 10
T in the vicinity of white dwarf stars and of up 9 to 10 T in the
vicinity of neutron stars the authors, together with coworkers and
candidates for doctor and diploma degrees, have investigated this,
fasci- nating quantum mechanical problem more or less continuously since
1978. The extensive tables and figures in the appendices represent the
most complete data set to date in this field of research. For practical
use all numbers are available by "anonymous ftp" over Internet. The
first direct measurement of a neutron star magnetic field by Trum- per
and his group, who observed a cyclotron feature at about 50 ke V in the
spectrum of the X-ray pulsar Hercules X-I corresponding to a field
strength of 8 several 10 T, stimulated investigations of atoms within
the framework of the adiabatic approximation, which is well justified
for such field strengths. This method and its results are discussed in
Chaps. 3, 5, and 6.