Angle-resolved photoelectron spectrometry studies of the autoionization of the 2s(2)2p 2P triply excited state of atomic lithium: experimental results and R-matrix calculations
We have measured the angle-resolved energy dependence of the electrons emitted over the energy range of the triply excited 2s(2)2p 2P lithium resonance using synchrotron radiation. We have also calculated the behavior of the angular distribution parameter beta using the R-matrix approximation. Experimental and theoretical results are in good agreement and show deep minima in the 1s2p (1, 3)P ionic channels. The energy at which the minima occur does not coincide with the resonance energy, but is shifted towards higher energy.
Diehl
S
Laboratoire de Spectroscopie Atomique et Ionique, UMR 8624 du CNRS, Universite Paris-Sud, B. 350, 91405 Orsay, France.
Cubaynes
D
Zhou
HL
VoKy
L
Wuilleumier
FJ
Kennedy
ET
Bizau
JM
Manson
ST
Morgan
TJ
Blancard
C
Berrah
N
Bozek
J