Investigation of the ultimate conditions for operatring a pump lamp module of the Mikron laser system

Abstract

Please note that terms and conditions apply. Multi-configurationHartree-Fock calculations III. Calculations of the 3 P, 1 D and 1 S states arising from the 1s 2 2s 2 2p 2 configuration for Z = 7·0 to Z = 30·0 Abstract. Multi-configuration Hartree-Fock calculations are reported to study the term splitting in the lsz2s22pz configuration from Z = 7.0 to Z = 15.0. T h e wave functions include the Hartree-Fock configuration ls22s22p2, the 'quasi-degenerate' configuration 1 s22p4, the single replacement configurations lsz2s3d2p2 and 1 s22s22p4f, the double replacement configurations from the 2p shell ls22s23Z3Z' (I, I' = 0, 1, 2)and, finally, the intershell configuration ls22s3s2p3p. T h e separations of the 3P, ID and ' S levels predicted from these functions are in very good agreement with experiment not only for the ratio (3P-1D)/(1D-1S) but also for the individual transitions. These functions have also been studied from 2 = 6.0 to 2 = 30.0 to compute the contribution to the correlation energy which arises from each configuration. For the 3P and ID states the ls22s3d2p2 configurations make a larger contribution to the correlation energy than does the 1 s22p4 configuration at low Z. At higher Z the reverse is true. For the 'S state all the configurations except the ls22p4 configuration make a small contribution to the correlation energy throughout the isoelectronic series.