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Triangle Condition

The condition that $j$ takes on the values

\begin{displaymath}
j=j_1+j_2, j_1+j_2-1, \ldots, \vert j_1-j_2\vert,
\end{displaymath}

denoted $\Delta(j_1j_2j)$.


References

Sobelman, I. I. Atomic Spectra and Radiative Transitions, 2nd ed. Berlin: Springer-Verlag, p. 60, 1992.




© 1996-9 Eric W. Weisstein
1999-05-26