Div. of Synchrotron Radiation Research


S.L. Sorensen, M. Kitajima, T. Tanaka, M. Hoshino, H. Tanaka, Y. Tamenori, R. Sankari, M. N. Piancastelli, K. Ueda, Y. Velkov, I. Minkov, V. Carravetta, and F. Gelmukhanov
Electronic Doppler effect in resonant Auger decay of CO molecules
Phys. Rev. A 76, 062704 (2007)

We present an experimental observation of the electronic Doppler effect in resonant Auger spectra upon core excitation slightly above the carbon K edge of the CO molecule. Thus the electronic Doppler effect has been identified in above-threshold excitation, and in a transition of symmetry. Ab initio calculations of the potential energy curves of the relevant states of CO and the wave packet technique have been employed to provide a theoretical background to the experimental studies. The weak feature around 299.4 eV in the photoabsorption spectrum, whose decay has been investigated by the present experiment, is assigned to double (core-valence) excitations to C 1s shake-up states with a strong dissociative character, and the Doppler splitting of the atomic peak has been reproduced by the simulation.

Link to the complete paper (if available):

Lunds universitet, Avdelningen för synkrotronljusfysik
Besöks- och leveransadress: Sölvegatan 14, 223 62 Lund
Postadress: Box 118, 221 00 Lund
Fakturaadress: Box 188, 221 00 Lund
OBS! Beställarens för- och efternamn måste alltid anges som referens på fakturan!

Lund University, Division of Synchrotron Radiation Research
Visiting and delivery address: Sölvegatan 14, 223 62 Lund, Sweden
Mail address: Box 118, 221 00 Lund, Sweden
Billing address: Box 188, 221 00 Lund, Sweden
Please observe that all bills have to contain the orderer's first and last name as the reference.

Phone: +46 (0)46-222 00 00, Fax: +46 (0)46-222 42 21
Webmaster: Johan Gustafson