| Autor: |
Markus Schöffler, T. Havermeier, Joachim Ullrich, S. Schössler, C. D. Schröter, Reinhard Dörner, Rolf Treusch, M. Smolarski, S. Düsterer, Th. Ergler, Artem Rudenko, K. U. Kühnel, M. Kurka, Lutz Foucar, Michael Gensch, Yuhai Jiang, R. Moshammer, K. Cole |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
Physical review letters 102, 123002 (2009). doi:10.1103/PhysRevLett.102.123002 |
| ISSN: |
0031-9007 |
| DOI: |
10.1103/PhysRevLett.102.123002 |
| Popis: |
Few-photon multiple ionization of N2 was studied differentially in a reaction microscope using 44 eV, approximately 25 fs, intense ( approximately 10(13) W/cm(2)) photon pulses from FLASH. Sequential ionization is observed to dominate. For various intermediate charge states N(2)(n+0 we find a considerable excess of photons absorbed compared to the minimum number that would energetically be required. Photoionization of aligned N(2)(n+) ions, produced by photon absorption in sequential steps, is explored and few-photon absorption pathways are traced by inspecting kinetic energy releases and fragment-ion angular distributions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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