Selection rules for magnetic dipole and

The selection rules for electric dipole radiation have already been considered in detail in Chapter 5 and are summarized in Table 7.1. Those for magnetic dipole and electric quadrupole transitions may be derived from equations (7.5) and (7.10) by the application of similar techniques. The task is therefore left as an exercise for the student (Problem 7.4) however, the comments which follow indicate the line of reasoning used and may prove helpful. 

Of these rigorous selection rules perhaps the most im- 

SeZeotion rules for single photon transitions in atomic spectra 

Rule Electric dipole Magnetic dipole Electric quadrupole 

Parity change No parity change No parity change 

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Selection rules for magnetic dipole and induced electric dipole transitions... 

Using the fact that the electric quadrupole moment operator is a symmetric second rank tensor and t.he magnetic dipole moment operator transforms as an axial vector, derive the selection rules for magnetic dipole and electric quadrupole radiation given in Table 7.1. 

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