TY - JOUR
T1 - High resolution X-ray photoelectron spectroscopy on nitrogen molecules
AU - Ueda, K.
AU - Püttner, R.
AU - Cherepkov, N. A.
AU - Gel'mukhanov, F.
AU - Ehara, M.
N1 - Funding Information:
The experiments were performed at SPring-8 with the approval of JASRI. The work was supported by Grants-in-Aid for Scientific Researches from the Japan Society for Promotion of Science (JSPS) and by a Grant for Creative Scientific Research from the Ministry of Education, Science, Culture, and Sports of Japan. RP acknowledges the financial support by JSPS. NAC acknowledges the financial support by the INTAS grant No. 03-51-4706. FG acknowledges support from the Swedish Research council (VR) and the STINT foundation. RP, NAC, and FG are grateful to Tohoku University for financial support and hospitality during their stay in Japan. KU and RP are grateful to Prof. T. Darrah Thomas for fruitful discussions.
PY - 2009
Y1 - 2009
N2 - This paper summarizes recent developments for experimental and theoretical studies on core-levelphotoelectron spectroscopy of N2. Analysis of experimental spectra reveals that the 1σg and 1σu core-hole states differ in energy by ∼100 meV and in equilibrium bond length by ∼0.04 pm,in agreement with ab initio predictions. The ratio of the 1σg and 1σu photoionization cross sections measured in the photon energy range up to 1 keV reveals oscillatory structure due to two-center interference, equivalent to Young-sdouble-slit experiment, as Cohen and Fano predicted. The experimental Auger rates for the transition to the dicationic ground stateare found to be different by a factor of two for 1σg and 1σu hole states and are well reproduced by the ab initio calculations. All these findings support the delocalized picture of the core hole. Discussion is given how many-body processes involved and observations for these processes affect the observation of the localized and/or delocalized core hole.
AB - This paper summarizes recent developments for experimental and theoretical studies on core-levelphotoelectron spectroscopy of N2. Analysis of experimental spectra reveals that the 1σg and 1σu core-hole states differ in energy by ∼100 meV and in equilibrium bond length by ∼0.04 pm,in agreement with ab initio predictions. The ratio of the 1σg and 1σu photoionization cross sections measured in the photon energy range up to 1 keV reveals oscillatory structure due to two-center interference, equivalent to Young-sdouble-slit experiment, as Cohen and Fano predicted. The experimental Auger rates for the transition to the dicationic ground stateare found to be different by a factor of two for 1σg and 1σu hole states and are well reproduced by the ab initio calculations. All these findings support the delocalized picture of the core hole. Discussion is given how many-body processes involved and observations for these processes affect the observation of the localized and/or delocalized core hole.
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U2 - 10.1140/epjst/e2009-00978-7
DO - 10.1140/epjst/e2009-00978-7
M3 - Article
AN - SCOPUS:65649130863
VL - 169
SP - 95
EP - 107
JO - European Physical Journal: Special Topics
JF - European Physical Journal: Special Topics
SN - 1951-6355
IS - 1
ER -