High-resolution x-ray imaging of Kα volume radiation induced by high-intensity laser pulse interaction with a copper target

0386733 - FZÚ 2013 RIV GB eng J - Článek v odborném periodiku
Galtier, E. - Moinard, A. - Khattak, F.Y. - Renner, Oldřich - Robert, T. - Santos, J.J. - Beaucourt, C. - Angelo, P. - Tikhonchuk, V. - Rosmej, F.B.
High-resolution x-ray imaging of Kα volume radiation induced by high-intensity laser pulse interaction with a copper target.
Journal of Physics B-Atomic Molecular and Optical Physics. Roč. 45, č. 20 (2012), s. 1-6. ISSN 0953-4075. E-ISSN 1361-6455
Grant CEP: GA ČR GAP205/10/0814
Výzkumný záměr: CEZ:AV0Z10100523
Klíčová slova: laser-matter interaction * x-ray spectroscopy * particle generation * x-ray imaging * Kα volume radiation * Cu targets
Kód oboru RIV: BH - Optika, masery a lasery
Impakt faktor: 2.031, rok: 2012

In a proof of principle experiment using the LULI 100-TW laser facility ELFIE, we have demonstrated high spectral and spatial resolution of Kα volume radiation induced by energetic electrons generated by irradiating solid Cu targets with visible (0.53 μm) 350 fs laser pulses. Employing an x-ray spectrometer equipped with the spherically bent crystal of quartz (502) and with an image plate, single shot Cu-Kα radiation was recorded in first-order reflection allowing for a geometrical mapping of the emission induced by hot electrons with a spatial resolution down to 30 μm. The simultaneously achieved high spectral resolution permitted the identification of asymmetries in the Kα1-group emission profile. Data from the shot in which a part of the laser beam was incident at grazing angle to the target surface show a signature of enhanced lateral transport of energetic electrons.
Trvalý link: http://hdl.handle.net/11104/0216013