Characterization of X-ray radiation from solid Sn target irradiated by femtosecond laser pulses in the presence of air plasma sparks. (4th August 2016)

• Record Type: Journal Article
• Authors: Curcio, A.; Anania, M.; Bisesto, F.G.; Faenov, A.; Ferrario, M.; Galletti, M.; Giulietti, D.; Kodama, R.; Petrarca, M.; Pikuz, T.; Zigler, A.
• Is Part Of: Laser and particle beams. Volume 34:Number 3(2016)
• Page Start: 533
• Page End: 538
• Publication Date: 2016-08-04
• Subjects: Air plasma sparks, -- X-rays, -- Femtosecond laser; Laser beams -- Periodicals; Particle beams -- Periodicals; 535.5
• DOI: 10.1017/S0263034616000458
• Languages: English
• ISSNs: 0263-0346

Abstract

Abstract: The emission of X-rays from solid tin targets irradiated by low-energy (few mJ) femtosecond laser pulses propagated through air plasma sparks is investigated. The aim is that to better understand the X-ray emission mechanism and to show the possibility to produce proper radiation for spectroscopic and imaging applications with a table-top laser system. The utilization of a controlled ultrashort prepulse is found necessary to optimize the conversion efficiency of laser energy into L α radiation. The optimum contrast between the main pulse and the controlled prepulse is found about 10 2 . A correlation between the laser contrast value and the laser near-infrared spectra at the exit of the plasma spark is observed.