Soft x-ray free-electron laser induced damage to inorganic scintillators

0448130 - FZÚ 2016 RIV US eng J - Článek v odborném periodiku
Burian, Tomáš - Hájková, Věra - Chalupský, Jaromír - Vyšín, Luděk - Boháček, Pavel - Přeček, Martin - Wild, J. - Özkan, C. - Coppola, N. - Farahani, S.D. - Schulz, J. - Sinn, H. - Tschentscher, T. - Gaudin, J. - Bajt, S. - Tiedtke, K. - Toleikis, S. - Chapman, H.N. - Loch, R.A. - Jurek, M. - Sobierajski, R. - Krzywinski, J. - Moeller, S. - Harmand, M. - Galasso, G. - Nagasono, M. - Saskl, K. - Sovák, P. - Juha, Libor
Soft x-ray free-electron laser induced damage to inorganic scintillators.
Optical Materials Express. Roč. 5, č. 2 (2015), 254-264. ISSN 2159-3930
Grant CEP: GA ČR(CZ) GAP108/11/1312; GA MŠMT EE2.3.30.0057
Grant ostatní: OP VK 4 POSTDOK(XE) CZ.1.07/2.3.00/30.0057
Institucionální podpora: RVO:68378271
Klíčová slova: fluorescent and luminescent materials * laser damage * free-electron lasers * soft x-rays * laser materials processing
Kód oboru RIV: BH - Optika, masery a lasery
Impakt faktor: 2.657, rok: 2015

An irreversible response of inorganic scintillators to intense soft x-ray laser radiation was investigated at the FLASH facility in Hamburg. Three ionic crystals, namely, Ce:YAG, PbWO4 and ZnO, were exposed to single 4.6 nm ultra-short laser pulses of variable pulse energy (up to 12 μJ) under normal incidence conditions with tight focus. Damaged areas produced with various levels of pulse fluences, were analyzed on the surface of irradiated samples using differential interference contrast and atomic force microscopy. The effective beam area of 22.2 ± 2.2 μm2 was determined by means of the ablation imprints method with the use of PMMA. Applied to the three inorganic materials, this procedure gave almost the same values of an effective area. The single-shot damage threshold fluence was determined for each of these inorganic materials. Both interaction and material characteristics responsible for the damage threshold difference are discussed in the article.
Trvalý link: http://hdl.handle.net/11104/0249856