Characterization of X-ray emission from laser generated plasma
Dottorato di Ricerca & Dip.to di Scienze Fisiche MIFT, Università di Messina, V.F.S. D’Alcontres 31, 98166 S. Agata(ME), Italy
2 Physics Institute, ASCR, 25068 Rez, Czech Republic
3 Dipartimento di Fisica & Astronomia, Università di Catania, V. S. Sofia 64, 95123 Catania, Italy
4 CNR-IMM, VIII strada n, 95121 Catania, Italy
5 ST-Microelectronics, Str.le Primosole 50, 95121 Catania, Italy
* Corresponding author: email@example.com
Published online: 9 January 2018
X-ray emission from laser generated plasma was studied at low (1010 W/cm2) and high (1018 W/cm2) intensity using ns and fs laser, respectively. Plasma characteristics were controlled trough the laser parameters, the irradiation conditions and the target properties. The X-ray spectra were acquired using fast detection technique based on SiC diodes with different active regions. The X-ray yield increases with the atomic number of the target, both at low and high intensity, and a similar empirical law has been obtained. The X-ray emission mechanisms from plasma are correlated to the plasma temperature and density and to the Coulomb charge particle acceleration, due to the charge separation effects produced in the non-equilibrium plasma. Functional dependences, theoretical approaches and interpretation of possible mechanism will be presented and discussed.
© The Authors, published by EDP Sciences, 2018
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