STARK INTERACTION IN THE NSNPZ3P1 LEVELS OF ZINC AND CADMIUM

The tensor polarizabilities of the n s n pz3P1 levels of Zn and Cd were measured using optical double resonance. From the rf-resonance signals in parallel electric and magnetic fields, the following tensor polarizabilities were deduced: Zn, αten(4 s4 pz3P1)=1.83(8) kHz/(kV/cm)2; Cd, αten(5 s5 pz3P1)=1.77(8) kHz/(kV/cm)2. Theoretical values were calculated using Coulomb approximation. The results were then compared with previous theoretical and experimental values and, in addition, with values for Hg. Theoretical results obtained by a modified Sternheimer method (E.J. Robinson: J. Opt. Soc. Am. 59, 782 (1969)) are in better agreement with the experimental values than the results of the Coulomb approximation calculations. © 1979 Springer-Verlag.