Mg 3pnsand 3pnd(J=1) autoionizing series

Abstract

The Mg 3pns (n =10-18) and 3pnd (n =9-40) doubly excited J =1 autoionizing states have been observed experimentally using an isolated-core excitation method with stepwise laser excitation.Linearly polarized laser light excites the 3pnd J = 1 and J =3 states, as well as the 3pns J = 1 states. Our previous study of the J =3 states enables the J =1 states in the 3pnd spectra to be identified.We have also calculated the spectra from a reaction matrix, and the agreement between theory and experiment is generally excellent. Differences between the J=1 and J=3 features are discussed and qualitatively explained in terms of semiclassical arguments. Additionally, energies of the 3sns 'So (n = 11 -22) Rydberg levels are reported.

Angular distributions of ejected electrons from autoionizing 3pndstates of magnesium

“…Our measured line shapes agree with those in Ref. [3], and they agree quite well with theory, as shown in Ref. [3].…”

“…These line shapes have been measured and compared with theory in Ref. [3]. Our measured line shapes agree with those in Ref.…”

“…should in principle incorporate some longer-range multipole effects that were neglected beyond 12 a.u. in the previous E matrices [2,3].…”

“…, larger than the 12 a.u. box used for calculation of previous K matrices [2,3]. The new K Ls matrix also includes the 3png 'F3, 3png F3, and 3png 63 channels.…”

“…The results of the alternate MQDT theory formulation using earlier K matrices of Refs. [2,3], described in the Appendix, are shown as a dotted line. Each horizontal line indicates the zero for the corresponding parameter that overlaps it.…”