Matrix Elements of SpinSpin Interaction
Abstract
An expansion of the spinspin interaction operator allows a derivation of matrix elements using the methods of Racah. Formulas are given for configurations involving two nonequivalent electrons and for n equivalent electrons. Extension of the results to other configurations may be made using known procedures.
 Publication:

Physical Review
 Pub Date:
 July 1953
 DOI:
 10.1103/PhysRev.91.31
 Bibcode:
 1953PhRv...91...31I