  We observe similar structures in the orbital radii of satellite and ring
systems of Uranus, Jupiter and Neptune. This stimulates an investigation that
the evolution of these systems and Saturn's system is initiated by a common
mechanism that involves the interaction of radiation with their subnebulae
(protosatellite disks). A model is presented that is characterized by resonance
created through stimulated radiative molecular association (SRMA) reactions. In
this model thermal energy is extracted from a protoplanetary disk at specific
distances from the protoplanet wherever there is a match between the local
thermal energy of the disk and the energy of photons impinging on the disk.
Radiation is supplied by a portion of the hydrogen molecule's spectrum for the
Uranian, Jovian and Neptunian disks and a portion of the hydrogen atom's
spectrum for the Saturnian disk. Findings shed light on the early evolution and
structure of satellite systems including the complicated ring system of Saturn.
They also link satellite orbital radii size distributions to shapes of
temperature distributions (TD's) in protosatellite disks. Theoretically
determined TD's in the protosatellite disks of Uranus (Mousis 2004) and Saturn
(Mousis Gautier and Bockelee-Moran, 2002) are essential to the present
investigation.
