We have observed single photon one-site (K-2) and two-sites (K-1K-1) double K-shell ionization in C2H 2n (n=1-3) sequence and in isoelectronic C2H2, N2 and CO molecules. The spectroscopy of K-1K-1 states is much more sensitive to the bond length than conventional ESCA spectroscopy based on single K-shell ionization. The mechanism of single photon two-sites is due to a knock-out process in which a primary photoionized 1s electrons eject another 1s electron on the neighbor atom.
|Journal||Journal of Physics: Conference Series|
|Issue number||SECTION 2|
|Publication status||Published - 2014 Jan 1|
|Event||28th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2013 - Lanzhou, China|
Duration: 2013 Jul 24 → 2013 Jul 30
ASJC Scopus subject areas
- Physics and Astronomy(all)