Počet záznamů: 1

Saturated ablation in metal hydrides and acceleration of protons and deuterons to keV energies with a soft-x-ray laser

  1. 1.
    0361437 - FZU-D 2012 RIV US eng J - Článek v odborném periodiku
    Andreasson, J. - Iwan, B. - Andrejczuk, A. - Abreu, E. - Bergh, M. - Caleman, C. - Nelson, A.J. - Bajt, S. - Chalupský, Jaromír - Chapman, H.N. - Fäustlin, R.R. - Hájková, Věra - Heimann, P.A. - Hjörvarsson, B. - Juha, Libor - Klinger, D. - Krzywinski, J. - Nagler, B. - Pálsson, G.K. - Singer, W. - Seibert, M.M. - Sobierajski, R. - Toleikis, S. - Tschentscher, T. - Vinko, S.M. - Lee Seung-Soo, S. - Hajdu, J. - Timneanu, N.
    Saturated ablation in metal hydrides and acceleration of protons and deuterons to keV energies with a soft-x-ray laser.
    Physical Review. E. Roč. 83, č. 1 (2011), "016403-1"-"016403-7" ISSN 1539-3755
    Grant CEP: GA AV ČR KAN300100702; GA MŠk LC510; GA MŠk(CZ) LC528; GA MŠk LA08024; GA AV ČR IAAX00100903; GA MŠk(CZ) ME10046
    Výzkumný záměr: CEZ:AV0Z10100523
    Klíčová slova: X-ray laser * XUV laser * warm dense matter * ion emission
    Kód oboru RIV: BH - Optika, masery a lasery
    Impakt faktor: 2.255, rok: 2011

    Studies of materials under extreme conditions have relevance to a broad area of research, including planetary physics, fusion research, materials science, and structural biology with x-ray lasers. We study such extreme conditions and experimentally probe the interaction between ultrashort soft x-ray pulses and solid targets (metals and their deuterides) at the FLASH free-electron laser where power densities exceeding 10(17) W/cm(2) were reached. Time-of-flight ion spectrometry and crater analysis were used to characterize the interaction. The results show the onset of saturation in the ablation process at power densities above 10(16) W/cm(2). This effect can be linked to a transiently induced x-ray transparency in the solid by the femtosecond x-ray pulse at high power densities. The measured kinetic energies of protons and deuterons ejected from the surface reach several keV and concur with predictions from plasma-expansion models.
    Trvalý link: http://hdl.handle.net/11104/0198748