Observation of K-shell soft X ray emission of nitrogen irradiated by XUV-free electron laser FLASH at intensities greater than 10.sup.16./sup. W/cm.sup.2./sup..

0362890 - FZÚ 2012 RIV DE eng J - Článek v odborném periodiku
Galtier, E. - Rosmej, F.B. - Renner, Oldřich - Juha, Libor - Chalupský, Jaromír - Gauthier, J. C. - White, S. - Riley, D. - Vinko, S. - Witcher, T. - Wark, J. - Nagler, B. - Lee, R. W. - Nelson, A.J. - Toleikis, S.
Observation of K-shell soft X ray emission of nitrogen irradiated by XUV-free electron laser FLASH at intensities greater than 10¹⁶ W/cm².
Contributions to Plasma Physics. Roč. 51, 2-3 (2011), s. 284-287. ISSN 0863-1042. E-ISSN 1521-3986
Grant CEP: GA ČR GAP208/10/2302; GA ČR GAP205/11/0571
Výzkumný záměr: CEZ:AV0Z10100523
Klíčová slova: soft X-ray diagnostic * Free Electron Laser * THM crystal
Kód oboru RIV: BH - Optika, masery a lasery
Impakt faktor: 1.108, rok: 2011

XUV/X-ray Free Electron Lasers provide tools to investigate matter under extreme conditions. As theory is at its infancy, the analysis of matter via the self-emission of the target is of central importance. We report the first successful observation of K-shell emission of Nitrogen at 430 eV using an XUV-Free Electron Laser to irradiate solid Boron Nitride targets at intensities larger than 10(16) W/cm(2). Using a Bragg crystal of THM coupled to a CCD, we resolved K-shell line emission from different charge states. We demonstrate that the spectroscopic data allow characterization of electron heating processes when X-ray radiation is interacting with solid matter. The results obtained have an important impact on the theory.
Trvalý link: http://hdl.handle.net/11104/0199065