State-dependent gerade/ungerade intensity ratios in the Auger spectrum of N-2
Liu, X. J.
Semenov, S. K.
Cherepkov, N. A.
- 材料学院－已发表论文 
We have applied both high-resolution photoelectron and Auger spectroscopy to study the N 1s core ionization of N(2). From the respective spectra we are able to show that the Auger decay involves delocalized description of core-hole states. Specifically, the Auger spectra of the N 1s sigma(g,u) core holes to the quasi-stable final states X (1)Sigma(+)(g) and D (1)Sigma(+)(u) are presented. They exhibit the gerade/ungerade splitting as well as vibrational progressions. The 1s sigma(g)/1s sigma(u) Auger intensity ratios are, in agreement with ab initio calculations, congruent to 2.1 and congruent to 0.8 for the X and the D states respectively. The large value for the X state can qualitatively be related to the gerade or ungerade symmetry of the Auger electron.