| Autor: |
G. Kaindl, Serguei L. Molodtsov, V. K. Adamchuk, S.A. Gorovikov, W. Gudat, J.-S. Schmidt, Ralph Püttner, I. E. Iossifov, S. I. Fedoseenko, Rolf Follath, Denis V. Vyalikh |
| Rok vydání: |
2003 |
| Předmět: |
|
| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 505:718-728 |
| ISSN: |
0168-9002 |
| DOI: |
10.1016/s0168-9002(03)00624-7 |
| Popis: |
Excellent results were obtained during commissioning of the Russian–German Beamline at bending-magnet D16-1A of the electron-storage ring BESSY II. The beamline is based on a Petersen-type plane-grating monochromator covering the XUV and soft X-ray photon-energy range. Photoionization spectra taken from the 2,–13 resonance of doubly excited He reveal a resolving power of E=DED100,000 at hn=64.12 eV. To our knowledge, this represents the best energy resolution achieved up to now on a bending-magnet beamline in the grazing-incidence photon-energy range. We present results on photon flux and dimensions of the light spot at the sample position, and show representative photoionization spectra of several gases studied in the course of the characterization of the beamline at various photon energies. The high stability of the beamline is demonstrated by the first observation of the weak 4,� 24 resonance of doubly excited He, which had not been observed before. r 2003 Elsevier Science B.V. All rights reserved. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect