Order ALPHA(6)MC(2) Contributions to the Fine Structure Splittings of Helium and HeliumLike Ions.
Abstract
In this thesis, the Douglas and Kroll order alpha^6mc^2 contributions to the 1s2p^3P_{J} fine structure splittings of helium are evaluated using the new variational wave functions of Drake (2). Our results improve the old calculation of Daley et al. (13) by several orders of magnitude. Extensions are made to twoelectron ions in arbitrary angular momentum states. The other triplet states calculated are Z = 2, 1snp ^3P_ {J}, n = 2,cdots, 10; Z = 3cdots, 12, 1s2p ^3P_{J}; Z = 3, cdots,12, 1s3p^3P_{J }; Z = 2,cdots, 12, 1s3d ^3D_{J}; and Z = 2, 1snd ^3D_{J}, n = 4,cdotcdotcdot, 10. The final numerical values for the reduced matrix elements and the splittings are tabulated. By including the newly calculated secondorder contributions of Drake, a comparison with the present high precision experimental measurements for the 1s2p ^3P_{J} states of helium is made.
 Publication:

Ph.D. Thesis
 Pub Date:
 1994
 Bibcode:
 1994PhDT........67Y
 Keywords:

 Physics: Atomic