Double K-shell ionization in C2H2n(n=l,3), CO and N2

M. Nakano, F. Penent, M. Tashiro, T. P. Grozdanov, M. Žitnik, S. Carniato, P. Selles, L. Andric, P. Lablanquie, J. Palaudoux, E. Shigemasa, H. Iwayama, Y. Hikosaka, K. Soejima, I. H. Suzuki, N. Kouchi, K. Ito

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish
Article number022013
JournalJournal of Physics: Conference Series
Issue numberSECTION 2
Publication statusPublished - 2014
Event28th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2013 - Lanzhou, China
Duration: 2013 Jul 242013 Jul 30

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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