NaturalWidth

NaturalWidth
is a parameter for AtomicState that specifies the natural width (radiative decay rate) of the state.
NaturalWidth[state]
returns the value specified for NaturalWidth in AtomicState state, or NaturalWidth[StateLabel[state]] if it is not specified.
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Specify a NaturalWidth for an atomic state:
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Out[2]=
Get the specified value for each state, or a placeholder variable if it is not specified:
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Out[3]=
The values for NaturalWidth are used in forming the IntrinsicRelaxation relaxation matrix:
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Out[4]//MatrixForm=
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