Possible Effects of Nuclear Spin on X-Ray Terms

It is shown that magnetic moments of nuclei are likely to cause small but presumably measurable separations of x-ray terms. A nucleus having a spin of 9/2 (in units of $\frac{h}{2\pi }$) and a magnetic moment 9/2 in protonic units should cause the $K$ terms of the heaviest elements to split into two components separated by about 22 volts. Such separations require for their detection a resolving power of 4200. For lighter elements the effect is relatively smaller. The same nuclear spin and magnetic moment would cause a separation of only 0.9 volts in Mo which would require for its detection a resolving power of 1.9×${10}^4$