Berlin 2001 – wissenschaftliches Programm
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A: Atomphysik
A 2: Ion Scattering I
A 2.2: Vortrag
Montag, 2. April 2001, 16:00–16:15, H1028
High-resolution study of thorium and uranium L x-ray spectra induced by impact with fast oxygen ions — •J.-Cl. Dousse1, D. Banas2, D. Castella1, D. Chmielewska3, D. Corminboeuf1, I. Fijal3, J. Hoszowska4, M. Jaskola3, A. Korman3, T. Ludziejewski3, Y.-P. Maillard1, O. Mauron1, M. Pajek2, M. Polasik5, P.-A. Raboud1, J. Rzadkiewicz3, and Z. Sujkowski3 — 1Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland — 2Institute of Physics, Pedagogical University, 25-405 Kielce, Poland — 3Soltan Institute for Nuclear Studies, 05-400 Otwock-Swierk, Poland — 4European Synchrotron Radiation Facility (ESRF), F-38043 Grenoble, France — 5Faculty of Chemistry, Nicholas Copernicus University, 87-100 Torun, Poland
We report on high-resolution measurements of the satellite structures accompanying several L-gamma x-ray transitions in Th and U metallic targets excited by impact with 230 MeV and 360 MeV oxygen ions. The measurements were performed at the variable energy cyclotron of the Paul Scherrer Institute (PSI), in Villigen, Switzerland, by means of high-resolution x-ray spectroscopy, using a transmission DuMont-type bent crystal spectrometer for the observation of the target x-ray emission. The instrumental broadening of about 10 eV of the spectrometer allowed us to resolve the M satellites of the L1-N2, L1-N3 and L2-N4 transitions in both Th and U. Moreover, in the 360 MeV oxygen-thorium collision, resolved N x-ray satellites of the L2-O4 transition could be observed, to our knowledge, for the first time.