Photoabsorption and photoion spectroscopy of atomic uranium in the region of 6p and 5d excitations
van Kampen, Paul and Gerth, Ch. and Martins, M. and Carroll, P. and Hirsch, John S. and Kennedy, Eugene T. and Meighan, Oonagh and Mosnier, Jean-Paul and Zimmermann, P. and Costello, John T. (2000) Photoabsorption and photoion spectroscopy of atomic uranium in the region of 6p and 5d excitations. Physical Review A, 61 (6). 062706-1. ISSN 1050-2947
Full text available as:
The photoabsorption process in atomic uranium has been investigated experimentally and theoretically in the 15–150-eV region. Using the dual laser plasma technique, the 6p photoabsorption spectrum has been recorded while for the first time the 5d region has been remeasured photoelectrically using both photoabsorption and photoion spectroscopy. Interpretation of the photoabsorption spectra is supported by Hartree-Fock calculations which take into account spin-flip decay and the interaction of many discrete states with many continua. The 6p spectrum is entirely dominated by spin-orbit split 6p⃗6d transitions. The 5d-subshell photoabsorption is shown to consist predominantly of discrete 5d⃗5f excitations; here the electrostatic and spin-orbit interactions are comparable in strength.
Archive Staff Only: edit this record