Preferred Label : X-ray satellite;
IUPAC definition : A weak line in the same energy region as a normal X-ray line. Another name used for
weak features is non-diagram line. Recommendations as to the use of these two terms
have conflicted. Using the term diagram line as defined here, non-diagram line may
well be used for all lines with a different origin. The majority of these lines originate
form the dipole-allowed de-excitation of multiply ionized or excited states, and are
called multiple-ionization satellites. A line where the initial state has two vacencies
in the same shell, notably the K-shell, is called a hypersatellite. Other mechanisms
leading to weak spectral features in X-ray emission are, e.g. resonance emission,
the radiative Auger effect, magnetic dipole and electric quadrupole transitions and,
in metals, plasmon excitation. Atoms with open electron shells, i.e. transition metals,
lanthanides and actinides, show a splitting of certain X-ray lines due to the electron
interaction involving this open shell. Structures originating in all these ways as
well as structures in the valence band of molecules and solid chemical compounds have
in the past been given satellite designations.;
Origin ID : X06717;
See also
A weak line in the same energy region as a normal X-ray line. Another name used for
weak features is non-diagram line. Recommendations as to the use of these two terms
have conflicted. Using the term diagram line as defined here, non-diagram line may
well be used for all lines with a different origin. The majority of these lines originate
form the dipole-allowed de-excitation of multiply ionized or excited states, and are
called multiple-ionization satellites. A line where the initial state has two vacencies
in the same shell, notably the K-shell, is called a hypersatellite. Other mechanisms
leading to weak spectral features in X-ray emission are, e.g. resonance emission,
the radiative Auger effect, magnetic dipole and electric quadrupole transitions and,
in metals, plasmon excitation. Atoms with open electron shells, i.e. transition metals,
lanthanides and actinides, show a splitting of certain X-ray lines due to the electron
interaction involving this open shell. Structures originating in all these ways as
well as structures in the valence band of molecules and solid chemical compounds have
in the past been given satellite designations.