RADIATIVE CASCADE THEORY,
UNIVERSITY COLL OF WALES ABERYSTWYTH
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A theory is developed for the radiative cascade between a continuum and the states of hydrogen-like ions. It is assumed that a steady state can be maintained by pumping electrons from the ground states into the continuum. The various electronic transitions which occur in such a situation are assumed to be radiative. This problem does not seem to have been treated explicitly in solid state physics when the continuum can be a conduction band, except for the formal considerations by Nagae 1963. It has, however, received attention in astrophysics Seaton, 1959 Bates et.al., 1962. The present paper is written in such a way that it can be used also in astrophysics.